15-09-2017, 01:41 PM
A proximity card or prox card is a "contactless" smart card that can be read without inserting it into a reading device, as required by previous magnetic stripe cards such as credit cards and smart cards of the "contact" type. Proximity cards are part of contactless card technologies. They remain close to an electronic reader for a moment that allow the identification of a coded number. The reader usually produces a beep or other sound to indicate that the card has been read. Proximity cards usually have a reading range of up to 50 cm (<15 inches), which is the main difference with the contactless smart card from 2 to 10 cm. The card can often be left in a briefcase or bag and simply read holding the wallet or purse near the reader. The term "proximity card" refers to the older 125 kHz devices as distinct from the newer 13.56 MHz contactless smart cards. The second generation works of prox cards in UHF frequency are in use for the application of mass and distance reading.
Proximity cards can not contain more data than a magnetic stripe card. Only contactless smart cards can support other data such as electronic balance of funds for contactless payment systems, history data for time and attention or biometric templates. When used without encoding data, only with the serial number of the card, the contactless smart card has features similar to proximity cards.
Proximity cards can not contain more data than a magnetic stripe card. Only contactless smart cards can support other data such as electronic balance of funds for contactless payment systems, history data for time and attention or biometric templates. When used without encoding data, only with the serial number of the card, the contactless smart card has features similar to proximity cards.