125khz PVC smart ID card,rfid smart card
USD $0.13 - $0.21 /Piece
Min.Order:500 Pieces
Shenzhen Chuangxinjia Smart Technology Co., Ltd.
Contactless smart ID cards
A second card type is the contactless smart card, in which the card communicates with and is powered by the reader through RF inductiontechnology (at data rates of 106–848 kbit/s). These cards require only proximity to an antenna to communicate. Like smart cards with contacts, contactless cards do not have an internal power source. Instead, they use an inductor to capture some of the incident radio-frequency interrogation signal, rectify it, and use it to power the card's electronics.
When smart cards enter magnetic field , received radio frequency signal issued by reader, sent out the products information that stored in chip by energy gained from induced current (no source label or passive label), or sent a certain frequency of signal actively by tag(Active Tag, source label or active label), after reader reading information and decoding , sent to central information system for date processing.