Proximity Cards Manufacturers

Proximity cards or tokens do not need to touch a reader in order to validate a transaction. Their radio-wave transmission technology is highly secure and their readers can be hidden behind walls, in clean, maintenance-free, vandal-proof locations. Best, because proximity readers don’t require contact, they speed the flow of human and vehicular traffic through checkpoints. These cards and tokens can remain in pockets, purses, or even on the front seats of vehicles and still be read by the system. Each proximity card contains a coil of wire that acts as both the receiving and transmitting antenna and a small, integrated circuit that is programmed with a unique ID code. These cards are powered by the voltage generated from a reader’s magnetic field in relation to the card’s antenna coil. Once energized by a reader, the card transmits its ID information. Transmission is so fast that access verification takes place in less than a quarter second. There are two types of proximity cards or tokens such as active and passive proximity cards.