Radio frequency identification, or RFID, is a generic term for technologies that use radio waves to automatically identify people or objects. There are several methods of identification, but the most common is to store a serial number that identifies a person, object or other information, on a microchip attached to an antenna. RFID cards continue to grow in popularity because of the convenience they offer in security, identification and access control applications, especially door access where fast, hands-free operation is preferred. RFID cards are low in price and commonly used in applications such as identification cards, keycards, payment cards, asset management and public transit fare cards.
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