RFID Card

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RFID Card

Radio-frequency identification card (RFID card) 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 by using radio waves. Some tags can be read several meters away and beyond the 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 RFID tags which have no battery and require an external source to provoke signal transmission and battery assisted passive (BAP) RFID tags which require an external source to wake up but have significant higher forward link capability providing greater range.
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