Smart card is a plastic card, size of a credit card, with an integrated microchip which, as
opposed to magnetic stripe cards, has not only memory resources, but also has a functionality
of a microprocessor. Nowadays, the processing power of such built in microprocessor is at a
level which enables it to act as a small personal computer with a simple operating system,
which means that smart cards today can store and execute several independent applications at
the same time.