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.

1. DKTE’s Textile & Engineering Institute
Electronics Department
Seminar on
BARCODE TECHNOLOGY
Presented by:
Neeta Bhimrao Chavare

2. Key Points :
• What is barcode?
• Why use barcodes?
• Barcode types
• Working of barcode
• Advantages
• Application
• What is QR code
• Inside QR code
• Advantages
• Application
• References

3. What is barcode?
 It is an automatic identification technology.
 Bar code is a predefined format of dark bars and white
spaces.
 Structured to contain a specific piece of information.

4. Why use barcodes?
 As far back as the 1960s, barcodes were used in
industrial work environments.
 In the early 1970s, common barcodes started appearing
on grocery shelves.
 Today, barcodes are just about everywhere and are
used for identification in almost all types of business.

5. Barcode Types
There are two types of barcodes:
1. Linear/1D barcodes.
2. 2D barcodes.

6. Working of Barcodes
 A bar code consists of a series of parallel, adjacent bars
and spaces.
 A bar code reader decodes a bar code by scanning a
light source across the bar code and measuring the
intensity of light reflected back by the white spaces.

7. Advantages
 Represent unique identity
of a product.
 Accuracy of data input.
(error free)
 Labor savings by avoiding
manual system.
 More accurate dispatch.
 Cost efficient.
 Real time data collection.
 Measurement of work in
progress throughout the
factory.
 Rapid access to total
production costs.

8. Application of Barcode
For Laboratories FOR LIBRARIES
FOR INDUSTRY

9. QR Code

10. What is 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.

11. 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.

12. 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.

13. QR CODE GENERATION
 DATA ANALYSIS
 DATA ENCODING
 ERROR CORRECTING
 STRUCTURE FINAL MESSAGE
 DATA MASKING
 FORMAT INFORMATION STRING

14. Advantages
 QR codes are not time limited in anyway and don’t
expire.
 You can generate as many as you need.
 There are no limits on the number of times they can be
scanned.

15. Application
 Human tracking robot using QR codes.
 Most commonly used barcode as of recent especially
with mobile phones.

16. Reference
International Journal of Emerging Trends & Technology in
Computer Science (IJETTCS) Web Site: www.ijettcs.org Email:
editor@ijettcs.org, editorijettcs@gmail.com ISSN 2278-6856
H. Aoki, S. Matsushita: “Balloon Tag: (In)visible Marker Which
Tells Who’s Who,” Proc.of the 4th IEEE International Symposium
on Wearable Computers, pp. 181-182 (2000-2010)

17. Thank You!