Smart cards are typically credit card sized, plastic credentials containing a microprocessor chip that serves the dual functions of communication and extensive data storage. Although it is packaged in the form of a card, a smart card operates much like a personal computer in that it can store data, manipulate data, and perform functions like mathematical equations. Smart cards normally contain application fields/sectors secured by special, application-specific security keys (much like keys that unlock various rooms in a building). These sectors can contain information for various applications – such as access control, cashless vending, mass transit, and payment systems – securely separated from one other by security keys.
Typical Smart cards utilizes and internal antenna to energize the card chip. The energy is transferred to the card by a reader antenna of the same frequency. Smart frequency is 13.56 MHZ.
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