RFID uses radio waves to identify objects or people. It was discovered in 1935 and uses tags attached to objects that can be read from several feet away without needing direct line-of-sight. There are two main parts: passive tags without batteries that use radio energy from readers, and active tags with onboard batteries that periodically transmit credentials. Readers transmit radio signals to interrogate tags, which respond with data that readers convert into usable information and transfer to host computers for storage and analysis. Common uses of RFID include goods tracking, access control, contactless payments, and asset management. The RFID market is projected to grow significantly in coming years.

1. RFID
RADIO-FREQUENCY
IDENTIFICATION
By
Raghav Agarwal

2. What is RFID
 Radio-Frequency Identification
 Discovered in 1935 by Scottish physicist Sir Robert Alexander
 A technology whereby digital data encoded in RFID tags or smart are captured by a
reader via radio waves
 Earlier used to warn of approaching planes of enemies while they were still miles
away
 Nowadays tags are usually attached to objects, and can be read from several feet
away
 The tag doesn’t always have to be in the direct line-of-sight to initiate interaction

3. How RFID Work
 A basic RFID system comprises two parts: the tag, and the reader.
Tag
The RFID tag has an embedded transmitter and receiver. The actual RFID
component contained in a tag has two parts: an integrated circuit for storing and
processing information, and an antenna to receive and transmit a signal. The RFID
tag has non-volatile memory storage, and can included either fixed or programmable
logic for processing transmission and sensor data.

4. How RFID Work
 There are two kinds of Tags
A passive tag is the cheapest option, and features no battery. The tag uses radio
energy transmitted by the reader.
An active tag features an onboard battery, periodically transmitting its
credentials.
Reader
The RFID reader features a two-way radio transmitted- reciever (transceiver),
sometimes referred to as an interrogator. The transceiver transmits an encoded
radio signal to interrogate the tag. The radio signal essentially wakes or activates
the tag. In turn, the tag transponder converts the radio signal into usable power,
and responds to the reader.

5. How RFID Work
RFID tags contain an integrated
circuit and an antenna, which are
used to transmit data to the RFID
reader (also called an
interrogator). The reader then
converts the radio waves to a
more usable form of data.
Information collected from the
tags is then transferred through a
communications interface to a
host computer system, where the
data can be stored in a database
and analyzed at a later time.

6. More Related Information
OPID
RFID
Bar Code
Reader
Manual book
Keeping
Alternatives
Of RFID Assign a unique
identity
No need an
internal power
source
Easily
embedded
almost
anywhere
Usage
Contactless
Objects
Security
Breaches
Security
Issues

7. Common RFID Usage
Goods
management
and tracking
Person and
animal
tracking
Contactless
payments
Asset
tracking
Supply chain
management
Counterfeit
prevention

8. RFID is here to stay
 RFID is an enormous industry.
 We use it almost everyday.
 The package that arrived at your house, the card you paid for your lunch, your
door-opening smart home hand-implant, and more, all use RFID.
 And as it RFID evolves, so will its uses.
 RFID market is projected to grow 24.5 billion USD by 2020.
 Increasing use of Internet will directly effect the RFID usages.

9. THANKS!!