![]() ![]() ![]() Understanding Your Programming Choices & Options But, with a multitude of standard to customizable options, HID prox cards can be complicated to order. HID prox cards and HID iClass contactless credentials are the gold standard in proximity technology. This ID data is simply a set of pre-programmed binary numbers (ones and zeros) that are used to identify the cardholder. When the card comes in the range of the card reader, the card reader detects the card and reads the programmed ID data from the card. Instead, these cards use a radio frequency signal sent by the transmitter. Prox cards have no internal power source, so there are never any batteries to replace. Inside each card or keyfob is an integrated circuit containing specific numerical programming and a coiled antenna, which increases the range at which the card can be read. Proximity cards, also known as Prox cards or access control cards, are contactless ID cards or keyfobs containing programming that is “read” by a card reader to control and secure physical access.
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