![]() Read ranges depend primarily on the reader. Proximity cards are less prone to physical damage or loss, saving you money in reduced card replacement costs. The proximity card is extremely secure and practically impossible to duplicate. The reader can be concealed inside walls or special enclosures and poses even fewer problems when surface-mounted because it has no opening with which to jam or tamper. There are no moving parts, no mechanical wear, no slots, and no read heads to maintain. The big advantage of proximity over other technologies lies in its simplicity. The whole process is completed in microseconds. ![]() Once powered, the card transmits the code to the reader. When the card is held at a certain distance from the reader, the RF signal is absorbed by a small coil inside the card that powers up the card’s microchip which contains a unique identification code. ![]() Proximity readers continuously transmit a low-level fixed radio frequency (RF) signal that provides energy to the card. ![]()
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