A proximity card or prox card is a smart card which can be "read" without inserting it into a reader device, as required by earlier magnetic stripe cards such as credit cards. To use, the proximity card is held near an electronic reader unit for a moment. The reader usually produces a "beep" or other sound to indicate the card has been read. Proximity cards typically have a range of around 5 cm (2 inches) for reading, so the user often leaves the card inside his or her wallet or purse, and simply holds the wallet or purse near the reader. The term "proximity card" can refer to the older 125 kHz devices or the newer 13.56 MHz contactless smartcards.
Proximity cards can hold more data than a magnetic stripe card, for example an electronic funds balance, and so can be used for contactless payment systems. Many major banks are offering such cards.
Other articles related to "cards, card, proximity card, proximity, proximity cards":
... There are two types of smart cards contact and contactless ... The smart card differs from the proximity card in that the microchip in the proximity card has only one function to provide the reader with the card's identification number ... The processor on the smart card has an embedded operating system and can handle multiple applications such as a cash card, a pre-paid membership card, or an access control card ...
... Access control Proximity reader with keypad Developed by Elko International Usage access control A proximity reader radiates a 1" to 20" electrical field around itself ... Cards use a simple LC circuit ... When a card is presented to the reader, the reader's electrical field excites a coil in the card ...
... Modern proximity cards are covered by the ISO/IEC 14443 (proximity card) standard ... It defines two types of card ("A" and "B", with different communications protocols), which typically have a range up to 10 cm (4 inches) ... There is also a related ISO/IEC 15693 (vicinity card) standard, which typically works up to a longer range of 50 cm (19 inches) ...
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