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Contact Smart Cards Contact smart cards must be inserted into a smart card reader. They have a small gold plate about ½" in diameter on the front, instead of the magnetic strip on the back like a credit card. When the card is inserted into a smart card reader, it makes contact with electrical connectors that transfer data to and from the chip. |
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Contactless Smart Cards Contactless smart cards are passed near an antenna to carry out a transaction. They look just like plastic credit cards, except that they have an electronic microchip and an antenna embedded inside. These components allow the card to communicate with an antenna/coupler unit without an physical contact. Contactless cards are the ideal solution when transactions must be processed very quickly, as in mass-transit or toll collection activities. |
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Combi Smart Cards The Combi smart card is a single card, which functions both as a contact and contactless card. It has a contact and contactless surface but the two interfaces are connected and have access to one shared data area via a microprocessor or logic module. The contact surface is always controlled by a microprocessor. The shared data area may be controlled by a microprocessor or a logic module. |
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