RFID, which stands for Radio-Frequency Identification, refers to a technology that uses wireless communication to identify and track objects, people, or animals. An RFID card is a card that incorporates RFID technology, typically consisting of a small chip and an antenna. These cards are used for various purposes, such as access control, identification, payment systems, and tracking.
The RFID card contains information that can be read by an RFID reader or scanner using radio-frequency signals. The card's chip stores data, and when the card is brought into proximity with an RFID reader, the reader sends out radio waves that power the chip and retrieve the stored information. This communication occurs without the need for direct physical contact, distinguishing RFID from technologies like barcodes.
RFID cards are commonly used in access control systems, where individuals can use the card to gain entry to secure areas by swiping or placing the card near a reader. They are also employed in contactless payment systems, transportation cards, inventory management, and various other applications where quick and efficient identification and tracking are necessary.
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