Introduction to RFID
RFID stands for radio frequency identification and is a technology that uses radio waves as signals for the exchange of data between a reading machine and an electronic tag attached in a remote location. This technology is frequently used for identification and for tracking. RFID is a relatively new technology used for inventory, logistics, in libraries, hospitals and also in humans.
The basic technology of the device requires reading equipment and tags between which data is communicated through radio waves. There are 3 types of tags available in RFID:
Passive tags, active tags and battery assisted passive tags. Passive tags have no power source, active tags are battery operated and the battery assisted passive tags that require an external source to function.
RFID tags consist of a circuit that stores data and reads signals and an antenna for receiving and sending signals.
Uses of RFID
Mobile RFID – RFID finds uses in a variety of industries and public platforms. The first use of RFID is in mobile phones, where patrons can ask for an RFID tag which sends and receives promotion signals and payment options.
Automotive RFID – The second use of RFID is in transportation payments. Some governments use RFID to control traffic management and product management. The automotive industry also uses RFID for zip cards, season parking tickets, and e-toll payments. Buses and public transportation in some countries use RFID cards for their bus, rail, and subway transport.
RFID in Business – Used in asset management and product tracking.
Organizations can track and manage their assets using RFID tracking devices. Web based tracking devices enable businesses to track their assets and take decisions anywhere in the world. RFID for product tracking uses the technology from the production department right on to the sales department. RFID systems use Auto-ID Labs for inventory management.
Used in transportation and logistics – The areas where RFID is popular in transportation are yard management, shipping and freight, and distribution centers. Aerospace engineering, airlines, railroad, and air cargo identification all use RFID technology.
Library RFID – Certain libraries have shifted from bar codes for their books to RFID tags for their books, CDs and DVDs.
Passport RFID – Certain South Asian countries and the US have started applying RFID tags to citizens’ passports to identify and track the passenger count and to prevent terrorism.
Animal RFID – Certain RFID tags are used to track animals in farms, ranches, veterinary hospitals, and in wildlife sanctuaries.
Advantages of RFID
RFID is a very efficient technology and it is easily available all over the world. It also offers a superior form of electronic article surveillance (EAS), and a highly developed self checkout process for consumers. The technology is comprehensive, advanced and automatic. A lot of data can be communicated with the help of RFID. It complements the bar code system. It is cheap, cost effective and universal. RFID radio wave frequencies can be easily regulated and standardized by the respective governments.