RFID - A Gift From The Past

RFID technology that is being used by companies world over has been around us since 1920s. Many companies are using RFID tags which are embedded in many products to store and retrieve data and information. These tags have tiny antennae that allow them to send a signal to an RFID reader or receiver.

There are primarily two types of RFID tags ? Active Tag and Passive Tag.

Active RFID Tag An active RFID tag has its own power supply and as a result can be used to receive information from a greater distance. Active RFID tags can also store information Batteries of some active RFID tags can last for as long as 10 years.

Passive RFID Tag In contrast, passive RFID tag does not have its own power supply. This type of RFID tag receives its power supply from an electrical current in the antenna that is produced as a result of the incoming radio frequency scan. A passive RFID tag can be used for sending and receiving information and data over a short distance only.

Nowadays RFID tags and readers are omnipresent. You will find RFID technology in bookstores and CD shops. It is used as an anti theft device. If a book or a CD has not been scanned, then it is the RFID technology that starts the alarm. RFID technology is being used in car alarms and car locking systems. Even animal are being tagged with RFID tags to keep a check on their whereabouts. This is specially true for wildlife where scientists keep a record of animals. A future use of RFID technology will be with prisoners. It is envisioned that prisoners could wear RFID tags to keep a watch on their movements and whereabouts.

There is immense use for RFID technology in today?s world and soon more and more companies and industries will start using this technology once the importance is realized.

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