Qr codes
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It is a recent development in the field of Computer science, used to encode information within an abstract picture.Even though it provides same level of security as the bar codes, it ensures encoding of more amount of data as compared to the traditional ways of encoding.
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Qr code ppt
QR codes are two-dimensional barcodes that can store numeric, alphanumeric, and byte/binary data. They were created in 1994 and can be read by camera phones. QR codes have error correction capabilities and can store up to 7,000 characters. They are used for various applications including product tracking, mobile payments, and education. Encryption is needed for sensitive QR code data. Overall, QR codes provide an efficient way to encode and link large amounts of information for many different uses.
QR-CODE presentation slide
QR codes are two-dimensional barcodes that can be scanned by smartphones to link to digital content like websites, videos, contact info, and more. The document provides steps on how to create QR codes using online generators by inputting a URL or other information. It also explains how to scan QR codes using smartphone apps that read the square patterns and direct users to the linked content. Finally, the document lists some common uses of QR codes in businesses, education, marketing, and more.
Qr codes
The document discusses QR codes, including what they are, their structure and components, how to generate and scan them, and the types of information they can contain. A QR code is a type of barcode that can be read by smartphones and contains information about a website, contact, file, or other data. It has finder patterns, timing/alignment patterns, error correction, and a data section that can store up to 7000 characters. QR codes are made using free online generators and scanned using dedicated apps on smartphones.
QR Codes: A Point of View
QR codes are two-dimensional barcodes that can be scanned by smartphone cameras to retrieve web links, contact info, or other digital content. They first emerged in Japan in the 1990s and have since been used widely for marketing purposes. While QR code usage is still low in the US, more brands are experimenting with campaigns incorporating these codes in print, online, and television. The document provides several examples of recent QR code campaigns and discusses considerations for QR code adoption in the US market.
QR Code - Quick Response Code
QR Code or quick response code is a machine-readable code consisting of an array of black and white squares, typically used for storing URLs or other information for reading by the camera on a smartphone.
QR Codes: What, Why, How & Where
QR codes allow users to encode text, URLs or other data that can be scanned by smartphone cameras and linked to websites or other online content. While some question if QR codes are just a trend, others argue they provide added value and convenience by allowing easy access to mobile-optimized content from print materials. Libraries have implemented QR codes in various ways, such as linking catalog records, guides and tutorials to additional online resources accessible from mobile devices.
QR Codes seminar
The document is a seminar report on QR codes presented by Umesh Chandra Mandal. It discusses the history of QR codes, their uses including in mobile apps, payments and website logins. It describes the design of QR codes including how data is stored and encoded with error correction. It covers variants of QR codes and their advantages and disadvantages. Finally, it discusses generating QR codes and their present use.
QR code
This presentation is about QR code and it uses in modern technology,here this code is compared with other codes and also tells about how it works
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Qr code ppt
QR codes are two-dimensional barcodes that can store numeric, alphanumeric, and byte/binary data. They were created in 1994 and can be read by camera phones. QR codes have error correction capabilities and can store up to 7,000 characters. They are used for various applications including product tracking, mobile payments, and education. Encryption is needed for sensitive QR code data. Overall, QR codes provide an efficient way to encode and link large amounts of information for many different uses.
QR-CODE presentation slide
QR codes are two-dimensional barcodes that can be scanned by smartphones to link to digital content like websites, videos, contact info, and more. The document provides steps on how to create QR codes using online generators by inputting a URL or other information. It also explains how to scan QR codes using smartphone apps that read the square patterns and direct users to the linked content. Finally, the document lists some common uses of QR codes in businesses, education, marketing, and more.
Qr codes
The document discusses QR codes, including what they are, their structure and components, how to generate and scan them, and the types of information they can contain. A QR code is a type of barcode that can be read by smartphones and contains information about a website, contact, file, or other data. It has finder patterns, timing/alignment patterns, error correction, and a data section that can store up to 7000 characters. QR codes are made using free online generators and scanned using dedicated apps on smartphones.
QR Codes: A Point of View
QR codes are two-dimensional barcodes that can be scanned by smartphone cameras to retrieve web links, contact info, or other digital content. They first emerged in Japan in the 1990s and have since been used widely for marketing purposes. While QR code usage is still low in the US, more brands are experimenting with campaigns incorporating these codes in print, online, and television. The document provides several examples of recent QR code campaigns and discusses considerations for QR code adoption in the US market.
QR Code - Quick Response Code
QR Code or quick response code is a machine-readable code consisting of an array of black and white squares, typically used for storing URLs or other information for reading by the camera on a smartphone.
QR Codes: What, Why, How & Where
QR codes allow users to encode text, URLs or other data that can be scanned by smartphone cameras and linked to websites or other online content. While some question if QR codes are just a trend, others argue they provide added value and convenience by allowing easy access to mobile-optimized content from print materials. Libraries have implemented QR codes in various ways, such as linking catalog records, guides and tutorials to additional online resources accessible from mobile devices.
QR Codes seminar
The document is a seminar report on QR codes presented by Umesh Chandra Mandal. It discusses the history of QR codes, their uses including in mobile apps, payments and website logins. It describes the design of QR codes including how data is stored and encoded with error correction. It covers variants of QR codes and their advantages and disadvantages. Finally, it discusses generating QR codes and their present use.
QR code
This presentation is about QR code and it uses in modern technology,here this code is compared with other codes and also tells about how it works
Qr codes
Qr codes are 2D matrix barcode. It is based on bar code technology used for scanning the data of an application in android system.
Qr code (quick response code)
QR codes were invented in 1994 by Toyota to track vehicles during manufacturing. They allow for high speed decoding of large amounts of data. While initially used in automotive manufacturing, QR codes are now commonly used in advertising and product packaging. QR codes can store various data types including numeric, alphanumeric, byte and Kanji characters. The size and data capacity of the QR code depends on its version number, with larger versions having more data capacity. QR codes are easily generated and scanned using free online tools and mobile apps, allowing for fast transfer of information to online servers.
Barcode technology ppt
This document provides an overview of barcode and QR code technology. It discusses that barcodes store data in linear/1D format while QR codes store data in 2D, allowing it to hold more information. The document outlines the basic components and workings of barcodes and QR codes, their advantages like unique identification and accuracy, and applications in areas like libraries, laboratories, and industry. QR codes in particular can be scanned by any smartphone and are commonly used now for linking to URLs and automated text/SMS.
Barcode latest technology1
Dhananjay Prajapati presented on bar codes. The document discussed the history of bar codes from their invention in 1949 to widespread adoption in the 1970s. It also covered different types of bar codes like linear and 2D codes, as well as bar code scanning technologies and applications in inventory control, shipping, retail, and healthcare. Benefits of bar codes included accuracy, labor savings, and real-time data collection.
seminar-on-barcodes
Barcodes provide a machine-readable representation of data through parallel bars and spaces of varying widths. In 1948, Bernard Silver and Norman Joseph Woodland began developing barcode technology, filing the first patent in 1952. Initially used for inventory tracking, the first product scanned with a barcode was a pack of Wrigley's gum in 1974. Barcodes store data through varying widths that are read by scanners and decoded into text information. They enable rapid data collection and accurate tracking of products throughout the retail supply chain.
QR Codes PowerPoint Presentation
Made PowerPoint presentation on QR codes for Advanced Microsoft Computer Applications(which was shown at GTGA) (GA Technology Educators Conference in November 2013). It runs all on its own all a person has to do is start it from the beginning, sit back, and enjoy.
QR Code - Mobile readable Barcode
A QR Code is a matrix barcode (or two-dimensional code), readable by QR scanners, mobile phones with a camera, and smartphones. The code consists of black modules arranged in a square pattern on white background. The information encoded can be text, URL or other data.
Barcode presentation 2013
Mr. Woodland and Silver developed the barcode after being asked by a supermarket chain to find a better way to track inventory. Woodland drew lines of different thicknesses representing codes while visiting Miami in 1948, which led to the Universal Product Code barcode. A barcode uses a scanner to read patterns of bars and spaces that represent data about an object. It begins with a start character, ends with a stop character, and may include a checksum for error checking. Major barcode types include linear codes like UPC, Code 39, Code 128, and 2D codes like PDF417 and Data Matrix that can encode more data in less space.
QR CODES IN BUSINESS.
QR codes allow storing large amounts of information that can be accessed quickly by scanning the code with a smartphone. They are becoming widely used in marketing and provide a link between physical printed materials and digital internet resources. While QR codes offer opportunities, businesses must be aware of potential risks like malicious codes and ensure codes direct users only to trusted websites asking for appropriate personal information. Proper use of QR codes can enhance search engine optimization and social media engagement.
Bar code- Techlogogy : Seminar PPT
This presentation is used in your college semester seminar. pls go through this ppt, this might help you a lot in your seminar.
"The Barcode" Presentation
"The Barcode" Presentation
By: Group Four (Aslam, Ceren, Fohn, Sara and Youssef)
for the group assignment of the "Research Methodology" course at the University of Greenwich
Barcode technology
This document discusses barcode technology. It provides definitions of barcodes as automatic identification technologies that encode information in dark bars and white spaces. Barcodes are used to accurately track and identify items. Common uses of barcodes include tracking inventory in warehouses and retail stores. There are two main types of barcodes: linear barcodes and 2D barcodes. Barcode scanners are used to read barcodes and input the encoded data into computer systems. Benefits of barcodes include increased accuracy, automation, and productivity. Potential disadvantages include system failures causing delays and issues reading damaged or poor quality barcodes.
Working of barcode reader Ppt - Unitedworld School of Business
Barcodes store data that can be read by barcode readers and converted into human-readable text. Barcode readers use light sensors to detect light reflected by the black and white bars of a barcode and convert it into electrical signals that are decoded into data. Common uses of barcodes include tracking inventory in warehouses and retail stores. Barcodes increase efficiency by allowing automatic identification of items during processes like shipping and checkout.
QR code
This document discusses QR codes and 2D barcodes. It begins with an introduction comparing 1D and 2D barcodes, specifically looking at their information density and capacity. It then focuses on QR codes, providing details on their data capacity compared to other 2D codes, as well as their features. The document outlines the steps to implement QR codes for mobile use, including installing barcode readers on phones and generating codes. It provides examples of QR code implementation and applications. Finally, it discusses trends in 2D barcode use.
Barcode Technology
This document discusses barcode technology. It provides an overview of what a barcode is, the history and types of barcodes. It describes how barcodes work by using patterns of bars and spaces to represent data that is scanned by barcode readers. The document outlines common applications of barcodes in industries like retail and libraries. It discusses the advantages of barcodes like low cost and accuracy, and disadvantages like potential problems from damaged or scratched barcodes.
BARCODE TECHNOLOGY
it tells about what is barcodes, version of barcodes, representation of barcode, working principle of barcode ,advantage and disadvantage of barcode and application of barcode
Barcodes - Types, Working and Hardware
A slide that contains complete information about barcodes.
Topics Covered:-
Introduction
Barcode Types and Uses
Bar-coding terminology
Barcode scanners
Advantages
Conclusion
Qr codes web
QR codes consist of black modules arranged in a square grid that can be read by a camera. They can store text, URLs, contact info, and other data. First created in 1994, QR codes use patterns and error correction to maximize data storage while allowing parts of the code to be damaged. They are widely used to link the physical world to digital information by encoding URLs or text that smartphones can read.
Barcode & qr code
The document discusses barcode technology and QR codes. It defines a barcode as a predefined format of dark and white spaces that can contain specific information to allow real-time data collection. There are two main types of barcodes: linear and 2D barcodes. QR codes are a type of 2D barcode that can store more information and be read quickly by camera devices. Barcodes and QR codes provide benefits like cost efficiency, accuracy, and linking digital and physical items, but have disadvantages like requiring coding of data and system reliance.
Barcode technology
This document presents a seminar on barcode technology. It defines what a barcode is, provides a brief history of barcodes, and describes the main types of barcodes. It then explains how barcodes work, including the different parts of a barcode and how scanners read barcodes. The document outlines some common applications of barcodes and lists advantages and disadvantages. It concludes by thanking the audience and offering to answer any questions.
Qr code ppt 23 sep 11
A QR code is a type of matrix barcode that can be read quickly by a cell phone and is used to store various types of digital information such as email addresses, web addresses, contact information, and text. The code consists of black modules arranged in a square pattern on a white background. Users can generate QR codes by entering text or other data, selecting a data type and content type, and receiving the code as an output.
Qr code power point
This document provides information on how to create and use QR codes. It discusses how QR codes work by encoding data or URLs that can be scanned by mobile phones. It recommends free QR generator websites that can be used to design custom QR codes. The document then gives various ideas and examples for how QR codes can be used in real estate, marketing, websites, and other applications. It also provides information on downloading QR scanning apps for phones.
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Qr codes
Qr codes are 2D matrix barcode. It is based on bar code technology used for scanning the data of an application in android system.
Qr code (quick response code)
QR codes were invented in 1994 by Toyota to track vehicles during manufacturing. They allow for high speed decoding of large amounts of data. While initially used in automotive manufacturing, QR codes are now commonly used in advertising and product packaging. QR codes can store various data types including numeric, alphanumeric, byte and Kanji characters. The size and data capacity of the QR code depends on its version number, with larger versions having more data capacity. QR codes are easily generated and scanned using free online tools and mobile apps, allowing for fast transfer of information to online servers.
Barcode technology ppt
This document provides an overview of barcode and QR code technology. It discusses that barcodes store data in linear/1D format while QR codes store data in 2D, allowing it to hold more information. The document outlines the basic components and workings of barcodes and QR codes, their advantages like unique identification and accuracy, and applications in areas like libraries, laboratories, and industry. QR codes in particular can be scanned by any smartphone and are commonly used now for linking to URLs and automated text/SMS.
Barcode latest technology1
Dhananjay Prajapati presented on bar codes. The document discussed the history of bar codes from their invention in 1949 to widespread adoption in the 1970s. It also covered different types of bar codes like linear and 2D codes, as well as bar code scanning technologies and applications in inventory control, shipping, retail, and healthcare. Benefits of bar codes included accuracy, labor savings, and real-time data collection.
seminar-on-barcodes
Barcodes provide a machine-readable representation of data through parallel bars and spaces of varying widths. In 1948, Bernard Silver and Norman Joseph Woodland began developing barcode technology, filing the first patent in 1952. Initially used for inventory tracking, the first product scanned with a barcode was a pack of Wrigley's gum in 1974. Barcodes store data through varying widths that are read by scanners and decoded into text information. They enable rapid data collection and accurate tracking of products throughout the retail supply chain.
QR Codes PowerPoint Presentation
Made PowerPoint presentation on QR codes for Advanced Microsoft Computer Applications(which was shown at GTGA) (GA Technology Educators Conference in November 2013). It runs all on its own all a person has to do is start it from the beginning, sit back, and enjoy.
QR Code - Mobile readable Barcode
A QR Code is a matrix barcode (or two-dimensional code), readable by QR scanners, mobile phones with a camera, and smartphones. The code consists of black modules arranged in a square pattern on white background. The information encoded can be text, URL or other data.
Barcode presentation 2013
Mr. Woodland and Silver developed the barcode after being asked by a supermarket chain to find a better way to track inventory. Woodland drew lines of different thicknesses representing codes while visiting Miami in 1948, which led to the Universal Product Code barcode. A barcode uses a scanner to read patterns of bars and spaces that represent data about an object. It begins with a start character, ends with a stop character, and may include a checksum for error checking. Major barcode types include linear codes like UPC, Code 39, Code 128, and 2D codes like PDF417 and Data Matrix that can encode more data in less space.
QR CODES IN BUSINESS.
QR codes allow storing large amounts of information that can be accessed quickly by scanning the code with a smartphone. They are becoming widely used in marketing and provide a link between physical printed materials and digital internet resources. While QR codes offer opportunities, businesses must be aware of potential risks like malicious codes and ensure codes direct users only to trusted websites asking for appropriate personal information. Proper use of QR codes can enhance search engine optimization and social media engagement.
Bar code- Techlogogy : Seminar PPT
This presentation is used in your college semester seminar. pls go through this ppt, this might help you a lot in your seminar.
"The Barcode" Presentation
"The Barcode" Presentation
By: Group Four (Aslam, Ceren, Fohn, Sara and Youssef)
for the group assignment of the "Research Methodology" course at the University of Greenwich
Barcode technology
This document discusses barcode technology. It provides definitions of barcodes as automatic identification technologies that encode information in dark bars and white spaces. Barcodes are used to accurately track and identify items. Common uses of barcodes include tracking inventory in warehouses and retail stores. There are two main types of barcodes: linear barcodes and 2D barcodes. Barcode scanners are used to read barcodes and input the encoded data into computer systems. Benefits of barcodes include increased accuracy, automation, and productivity. Potential disadvantages include system failures causing delays and issues reading damaged or poor quality barcodes.
Working of barcode reader Ppt - Unitedworld School of Business
Barcodes store data that can be read by barcode readers and converted into human-readable text. Barcode readers use light sensors to detect light reflected by the black and white bars of a barcode and convert it into electrical signals that are decoded into data. Common uses of barcodes include tracking inventory in warehouses and retail stores. Barcodes increase efficiency by allowing automatic identification of items during processes like shipping and checkout.
QR code
This document discusses QR codes and 2D barcodes. It begins with an introduction comparing 1D and 2D barcodes, specifically looking at their information density and capacity. It then focuses on QR codes, providing details on their data capacity compared to other 2D codes, as well as their features. The document outlines the steps to implement QR codes for mobile use, including installing barcode readers on phones and generating codes. It provides examples of QR code implementation and applications. Finally, it discusses trends in 2D barcode use.
Barcode Technology
This document discusses barcode technology. It provides an overview of what a barcode is, the history and types of barcodes. It describes how barcodes work by using patterns of bars and spaces to represent data that is scanned by barcode readers. The document outlines common applications of barcodes in industries like retail and libraries. It discusses the advantages of barcodes like low cost and accuracy, and disadvantages like potential problems from damaged or scratched barcodes.
BARCODE TECHNOLOGY
it tells about what is barcodes, version of barcodes, representation of barcode, working principle of barcode ,advantage and disadvantage of barcode and application of barcode
Barcodes - Types, Working and Hardware
A slide that contains complete information about barcodes.
Topics Covered:-
Introduction
Barcode Types and Uses
Bar-coding terminology
Barcode scanners
Advantages
Conclusion
Qr codes web
QR codes consist of black modules arranged in a square grid that can be read by a camera. They can store text, URLs, contact info, and other data. First created in 1994, QR codes use patterns and error correction to maximize data storage while allowing parts of the code to be damaged. They are widely used to link the physical world to digital information by encoding URLs or text that smartphones can read.
Barcode & qr code
The document discusses barcode technology and QR codes. It defines a barcode as a predefined format of dark and white spaces that can contain specific information to allow real-time data collection. There are two main types of barcodes: linear and 2D barcodes. QR codes are a type of 2D barcode that can store more information and be read quickly by camera devices. Barcodes and QR codes provide benefits like cost efficiency, accuracy, and linking digital and physical items, but have disadvantages like requiring coding of data and system reliance.
Barcode technology
This document presents a seminar on barcode technology. It defines what a barcode is, provides a brief history of barcodes, and describes the main types of barcodes. It then explains how barcodes work, including the different parts of a barcode and how scanners read barcodes. The document outlines some common applications of barcodes and lists advantages and disadvantages. It concludes by thanking the audience and offering to answer any questions.
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Working of barcode reader Ppt - Unitedworld School of Business
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A QR code is a type of matrix barcode that can be read quickly by a cell phone and is used to store various types of digital information such as email addresses, web addresses, contact information, and text. The code consists of black modules arranged in a square pattern on a white background. Users can generate QR codes by entering text or other data, selecting a data type and content type, and receiving the code as an output.
Qr code power point
This document provides information on how to create and use QR codes. It discusses how QR codes work by encoding data or URLs that can be scanned by mobile phones. It recommends free QR generator websites that can be used to design custom QR codes. The document then gives various ideas and examples for how QR codes can be used in real estate, marketing, websites, and other applications. It also provides information on downloading QR scanning apps for phones.
An introduction to QR Codes.
This document discusses QR codes, including their history from barcodes in the 1960s/70s, actual uses in logistics, mobile ticketing, and marketing, examples, and alternatives. It notes that QR codes sometimes fail because content is not adapted for mobile, irrelevant information is displayed, and usage is not measured. The document advocates for standardization and keeping QR codes open source.
Qr code (quick response code)
A QR code is a type of matrix barcode invented in 1994 that can be scanned by smartphones to access digital content. When scanned, QR codes can link to websites, contact info, videos, music and more. They provide a mobile-friendly way to connect physical objects to online resources. While adoption has been slow, QR codes are becoming more common as smartphones proliferate and are seen as a way to bridge online and offline experiences for consumers.
Bar Code
The Universal Product Code (UPC) is a barcode standard used to identify retail products. UPC codes were created by the Uniform Code Council to speed up checkout processes and improve inventory tracking for retailers. A UPC code contains the manufacturer's identification number, item number, and check digit. It allows stores to look up product prices when scanned but does not encode the price directly. Coupon codes have a different numbering system that allows stores to validate discounts against specific product families.
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QR Codes and the Future of Next Generation mLearning
QR codes are two-dimensional barcodes that can be read by smartphone cameras and contain information to direct the user to a website or other online content. The document discusses how QR codes are being used in various industries like retail, publishing, and education. Some benefits of QR codes are that they are low cost, easy to use, mobile, and provide instant access to online information. Potential issues include slow mobile internet speeds, data costs, and lighting or software problems reading the codes. The document also provides an example of how the Sydney Design 08 Festival used a QR code in their program to provide special offers to users who scanned the code with a mobile application.
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This document summarizes different techniques for encoding digital data into an analog signal for transmission, including: non-return to zero (NRZ) encoding, Manchester encoding, biphase encoding, scrambling, and modulation techniques like amplitude shift keying (ASK), frequency shift keying (FSK), and phase shift keying (PSK). It discusses the pros and cons of different encoding schemes in terms of synchronization, error detection, bandwidth usage, and noise immunity. The document is from a textbook on data and computer communications.
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QR Code Scanning PowerPoint Templates.pptx
The document discusses QR codes, including:
- QR codes were created in 1994 by Denso Wave to track vehicle parts and became widely used in Japan in 2002 with mobile phones.
- QR codes can store various data types and are read by smartphones. They consist of black square modules arranged in a pattern on a white background.
- The error correction capability allows QR codes to be read even if dirty or damaged. It employs Reed-Solomon codes to generate error correction codewords.
- QR code versions range from 1 to 40, with higher versions having larger matrix sizes and storage capacity. Structure includes data, error correction codewords, and format/version information.
Understanding Bar Codes
This ebook gathers all of the great information presented during the Bob and Dave Show Bar Code series, including screen grabs, slides and more.
Qrcodequickresponsecode presentation
QR codes can store large amounts of information and are readable by smartphone cameras. They were invented in 1994 by Toyota to track vehicles and have since been widely used for consumer advertising and packaging. QR codes use patterns and error correction to encode text, numbers, URLs or other data in a machine-readable format. Anyone can generate and use QR codes for free using online generators and reader apps.
Implementation of 2D Optimal Barcode (QR Code) for Images
This document proposes a technique to increase the data capacity of QR codes by first compressing the data before encoding it into a QR code. It begins with an introduction to 1D and 2D barcodes and QR codes. It discusses the structure and components of QR codes, including finder patterns, alignment patterns, timing patterns, and the data area. It then discusses data capacity limits of QR codes and different data compression techniques. The proposed technique involves: 1) Converting image data to a Base64 character format, 2) Compressing the data using a lossless compression algorithm, 3) Encoding the compressed data into a QR code. It provides algorithms for the compression and decompression steps. Results show that the proposed technique increases data capacity
IRJET- Two Layer QR Code with Picture Embedding
This document presents a method for creating two-layer QR codes that can display two different messages or patterns when viewed from different directions. Specifically:
- A two-layer QR code structure is proposed, with a top transparent layer and bottom black/white layer, allowing two independent QR codes to be seen separately depending on viewing angle.
- An algorithm is described for generating these two-layer QR codes by optimizing the module patterns to best match target QR codes for the two messages while maximizing error correction.
- The technique is said to be useful for displaying multiple messages or translations in situations like stores with multiple payment options or apps with different download links by platform.
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Presentation on QR code.
QR code is a kind of matrix 2D barcode designed by Denso-Wave Corporation of Japan in 1994 for the automotive industry.
Quick Response Code (QR code)
QR codes were invented in 1994 by Toyota to track vehicles and parts during manufacturing. Now they are commonly used to easily share links and transfer information between smartphones. QR codes contain black and white squares that encode text or URLs that direct a scanning phone to open a website, place a call, send a text, or take other actions. The codes use error correction and have position markers to allow them to be scanned even if partially obscured. Popular uses include linking to websites, including phone numbers to call or text, and storing other data on a mobile device.
14 571
The document provides information on QR codes, including their history, structure, capabilities, and generation. It discusses how QR codes can store more data than traditional barcodes, in a smaller space, and how their error correction allows them to be read even if dirty or damaged. The document also describes the key components of a QR code, such as finder patterns, alignment patterns, and data areas, and explains how QR codes are encoded with different data types.
IRJET - Secure Watermarking through Optimized Embedding of Images in QR C...
This document proposes a method for securely embedding images within QR codes. It discusses halftoning techniques to select pixels for modification to minimize visual distortion when embedding the image. The QR code information bits are encoded into the luminance values of the embedded image. Error correction codes are also used. The embedding process is compatible with standard QR decoding applications and can be applied to color images with full area coverage. The algorithm aims to reduce the number of corrupted modules and utilize more of the QR code area for the embedded image. In conclusion, the paper presents a novel approach for embedding images in QR codes using halftoning to reduce visual effects while maintaining decodability.
DATA SECURITY THROUGH QR CODE ENCRYPTION AND STEGANOGRAPHY
The art of information hiding has become an important issue in the recent years as security of information
has become a big concern in this internet era. Cryptography and Steganography play major role for
secured data transfer. Steganography stands for concealed writing; it hides the message inside a cover
medium. Cryptography conceals the content of a message by encryption. QR (Quick Response) Codes are
2-dimensional bar codes that encode text strings. They are able to encode information in both vertical and
horizontal direction, thus able to encode more information. In this paper a novel approach is proposed for
secret communication by combining the concepts of Steganography and QR codes. The suggested method
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Hiding the QR code inside a colour image. This hiding process embeds the quantised QR code so that it
will not make any visible distortion in the cover image and it introduces very minimum Bit Error Rate
(BER). Experimental result shows that the proposed method has high imperceptibility, integrity and
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Qr code
this presentation gives full description about QR Code .
what is qr code, how qr code working, qr code implementation , qr code encoding and decoding.
Three qr code
This document provides an overview of QR Codes. It discusses the development and standardization of QR Codes, their key characteristics and structure. Some key points:
- QR Codes can store large amounts of data compared to linear barcodes and support multiple languages efficiently. They have gained widespread use in applications like boarding passes, product labeling, and mobile payments.
- QR Codes have finder patterns that allow for fast decoding from any angle. They also have error correction capabilities and can encode text, numbers, URLs, and other data.
- The structure of a QR Code includes finder patterns, alignment patterns, timing patterns, and a data area for storing encoded information. Specifications define the supported data volumes and
Iris images encryption based on QR code and chaotic map
In this paper an Iris image is encrypted based on QR (quick response) code and chaotic map. The main idea of the proposed system is generating a QR code depending on the input text and then extract the features from QR code by using convolution, these features are used for key generation. After that the permuted iris image is encrypted by using generated key, after that the resulting image will be encrypts using 2D logistic map. The randomness of generated key is tested using the measures of NIST, and quality of images that encrypted in this method are tested by using security analysis tests such as PSNR, UACI, NPCR, histogram, correlation and entropy. The security analysis shows that the proposed system is secure for iris image encryption.
QR code optimization
The document discusses faster and higher density monochromic QR codes with reduced error rates. It motivates the need for improved QR codes due to their increasing use in applications like transportation ticketing, product labeling, and robotics. Current QR code limitations around distortions, color usage, and data capacity are reviewed. The document then proposes a new backtracking algorithm to reduce QR code decoding errors from issues like distortions. It also introduces a new QR code encoding method that stores nearly double the data of universal QR codes using a technique of encoding data in two rotated QR codes. While the new QR code has faster scanning and more storage, it is more vulnerable to light glare issues. Future work to address limitations and further improve capacity is discussed.
IRJET - Color Qr Code
This document summarizes a research paper on using color QR codes to increase data capacity. It discusses how traditional black and white QR codes have limited storage capacity. The paper proposes using multiple colors in addition to black and white to encode more data in a QR code. It describes an encoding process where data is encrypted, converted to color QR code format, and embedded in a cover image. A decoding process recovers the hidden data from the stego image. The paper implements this approach and demonstrates it can generate high-capacity color QR codes that are readable by mobile phones to retrieve the encoded text. This provides a potential way to increase QR code data capacity compared to traditional monochrome versions.
Increasing data storage of coloured QR code using compress, multiplexing and ...
Quick response (QR) code is a printed code of black and white squares that is able to store data without the use of any of the electronic devices. There are many existing researches on coloured QR code to increase the storage capacity but from time to time the storage capacity still need to be improved. This paper proposes the use ofcompress, multiplexing and multilayered techniques, as an integrated technique known as CoMM, to increase the storage of the existing QR code. The American Standard Code for Information Interchange (ASCII) text characters are used as an input and performance is measured by the number of characters that can be stored in a single black and white QR code version 40. The experiment metrics also include percentage of missing characters, number of produced QR code, and elapsed time to create the QR code. Simulation results indicate that the proposed algorithm stores 24 times more characters than the black and white QR code and 9 times more than other coloured QR code. Hence, this shows that the coloured QR code has the potential of becoming useful mini-data storage as it does not rely on internet connection.
Qr code in education
QR codes can store various types of data like URLs, contact information, product details, and more. The amount of data it can hold depends on its size and version, with larger QR codes storing more data up to a maximum of 3KB. Businesses can use QR codes on marketing materials like print ads, websites, and business cards to easily provide additional details to customers who scan the code with their smartphone. While versatile, a limitation is that QR codes require a camera phone and reader software to be scanned.
FPGA Based Decimal Matrix Code for Passive RFID Tag
In this paper, Decimal Matrix Code is developed for RFID passive tag. The proposed DMC uses the decimal algorithm to obtain the maximum error detection and correction capability. The Encoder-Reuse Technique is used to minimize the area overhead of extra circuits without disturbing the complete encoding and decoding processes. ERT uses DMC encoder itself to be part of the decoder. The Simulation results reveals that the Decimal Matrix Code is effective than existing Matrix and Hamming odes in terms of Error Correction Capability. Xilinx ISE 14.7 Software is used for the simulation outputs. The complete design is verified and tested on Spartan-6 FPGA board. The performance of system is measured in terms of power, area and delay. The Synthesis result shows that, the power required for complete design of Decimal Matrix Code is 0.1mW with a delay of 3.109ns.
Use of QR Code: A Step Towards Development in India
1) QR codes were invented in 1994 as a way to store more data than traditional barcodes in both horizontal and vertical dimensions. They have gained popularity for advertising and engagement but are still emerging in India.
2) QR codes have a finder pattern and timing/alignment patterns to help decoding, and store data, error correction, and other information. They can encode various types of data like URLs, contacts, or text.
3) QR codes are seeing increasing use cases in India for ticketing, tourism, newspapers, and advertising to provide additional online content and information to users. Transportation services and airports are also adopting QR codes.
IRJET- A Survey: Secret Sharing Approach with Cheater Prevention on QR Code
This document summarizes a survey on a secret sharing approach using QR codes that prevents cheating. It discusses how QR codes can store large amounts of data but lack security. The proposed approach uses the characteristics of QR codes to achieve secret sharing and distribute private data securely among participants using QR tags. Each participant receives a marked QR tag, and the original data can only be retrieved when an authorized number of participants come together. This approach provides security, detectability of cheaters, and adjustable payload for the QR codes.
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みなさんこんにちはこれ何文字まで入るの？40文字以下不可とか本当に意味わからないけどこれ限界文字数書いてないからマジでやばい文字数いけるんじゃないの？えこ...
ここ3000字までしか入らないけどタイトルの方がたくさん文字入ると思います。
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Qr codes
- 1. QR CODES Presented byEllina Priyadarshini
- 2. WHAT IS A QR CODE ? QR code: Quick Response code • Is a 2-D bar code • Used to encode information(URLs, automated SmS, text data) in two dimensional space.
- 3. HISTORY Created by a Japanese company- Toyota subsidiary Denso-wave in 1994. Used to track parts during vehicle manufacture
- 4. BARCODES V/S QR CODES Stores data in two dimensions unlike the 1-D barcodes. High storage capacity in less space. Can be scanned by any smart phone with the app installed.
- 5. QR CODES IN EVERYDAY LIFE
- 6. INSIDE QR CODES Finder Patterns: Finds if the given code is a QR Code Timing Pattern: Tracks the timing of the incoming code Separators: Separates data from the patterns Alignment Pattern: Tells about initiation & Separation of data. Dark Module: A black module placed beside the bottom left finder pattern.
- 7. QR CODE GENERATION DATA ANALYSIS DATA ENCODING ERROR CORRECTING STRUCTURE FINAL MESSAGE DATA MASKING FORMAT INFORMATION STRING
- 8. DATA ANALYSIS MODES SUPPORTED BY QR CODES: NUMERIC: for decimal digits from 0-9 • ALPHA-NUMERIC: digits from 0-9,upper-case • alphabets & symbols($,%,*,+,-,/,space) • BYTE: strings in form of hexadecimal bytes
- 9. DATA ENCODING: STEP 1: Select error correction level. STEP 2: Determine the smallest version for the data. STEP 3: Add the mode indicator STEP 4: Add the character count indicator STEP 5: Encode using the selected mode STEP 6: Breaking up to form code-words
- 10. ERROR CORRECTION CODING Allows the QR code readers to detect & correct the errors in the code. Reed-Solomon error-correcting algorithm is used. • Encoding symbols are derived from the coefficients of a polynomial constructed by multiplying p(x) with a generator polynomial.
- 11. STRUCTURE FINAL MESSAGE If code-word is small, it is left as such. Larger QR codes are broken up into blocks of either 15 or 16 data codewords each.
- 12. MODULE PLACEMENT IN MATRIX The final string is placed in the QR code matrix along with the function patterns (discussed earlier). Fig. 1 Fig. 2 Fig. 3 Fig. 4
- 14. DATA MASKING “MASKING” means, changing the color of a module. QR codes define 7 masking patterns. For ex: in mask pattern #1, every even numbered row in the matrix is masked
- 15. FORMAT INFORMATION STRING Includes the error correction level & the masking pattern currently in use. (7x4) i.e. 28 format information strings exist. Format string table gives the list of 28 format information strings.
- 16. HOW TO USE QR CODES? Use a smart phone installed with a QR scanner app. Open the app & place it in front of the QR code. Get the result!!
- 17. EXAMPLE:- ENCODED DATA HELLO WORLD DATA WORD 00100000 01011011 00001011 01111000 11010001 01110010 11011100 01001101 01000011 01000000 11101100 00010001 11101100
- 18. ERROR CORRECTION CODE 196 35 39 119 235 215 231 226 93 23 STRUCTURE FINAL MESSAGE 0100001111110110101101100100011 0010101011111011011100110111101110100011 0010000101111011101110110100001100000011101 110111010101100101011101110110001100101100001 000100110100001100000011100000110010101011111 0011101101101010101101010100111010101…….
- 20. QUERIES