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A Smartcard is a standard credit card sized plastic card with an integrated circuit embedded in it. This integrated circuit includes a microprocessor and a bit of memory, which together hold information in electronic form and controls who uses ....

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... accurately accessed by all sorts of electronic data processing equipment. Some are smarter than others, the smartness of a card depends on the complexity of the embedded processor, as well as the software that is installed on the chip. Even the simplest cards, like the pay phone cards, are smart enough that they are virtually impossible to copy or falsify. However, the simplest do not provide any security against unauthorized use. In other words, if you lose your pay phone card, anyone else can use it. There are of course smarter cards that provide such security by incorporating a password or even a biometric identifier such as a finge ...