About RFID
Radio-frequency identification (RFID) is the use of 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 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
- Battery assisted passive (BAP) which require an external source to wake up but have significant higher forward link capability providing great read range
Today, RFID have many uses mainly
- In enterprise supply chain management to improve the efficiency of inventory tracking and management
- In enterprise personal and Asset tracking
- In hospitals to for personal and patient, sample, medicine tracking and monitoring
- In enterprise facility access control
- In enterprise document authentication, protection and monitoring
- and many other applications
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