Radio Frequency Identification (RFID)
RFID is the use of an object (typically referred to as an RFID tag) applied to or incorporated into a product, animal, or person for the purpose of identification and tracking using radio waves. Some tags can be read from several meters away and beyond the line of sight of the reader.
Most RFID tags contain at least two parts. One is an integrated circuit for storing and processing information, modulating and demodulating a radio-frequency (RF) signal, and other specialized functions. The second is an antenna for receiving and transmitting the signal.
There are generally three types of RFID tags: active RFID tags, which contain a battery and can transmit signals autonomously, passive RFID tags, which have no battery and require an external source to provoke signal transmission, and battery assisted passive (BAP) which require an external source to wake up but have significant higher forward link capability providing great read range.
RFID has many applications, for example, it is used in enterprise supply chain management to improve the efficiency of inventory tracking and management.
Current uses:
1. Payment by Mobile phone
2 .Transportation payment
- – Economical alternative to car-ownership: Car-sharing
- – Season Parking Tickets
- – Toll roads
- – Public Transit (Bus, Rail, Metro)
3 .RFID and asset management
4 .Product tracking
– IT asset tracking
5 .Transportation and logistics
6 .Animal identification
– RFID tracking & tracing for meatpackers
7 .Inventory systems
8 .Libraries
9 .Human Identification
- – Passports
- – Schools and universities
- – Museums
- – Social retailing
- – Race timing
- – Ski resorts
- – Human implants