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Integrated Circuit Microprocessor Cards Microprocessor cards (also known as "chip card") offer greater memory storage and security of data. Chip cards can also process data on the card. The current generation of chip cards has an eight-bit processor, 16KB read-only memory, and 512 bytes of random-access memory. These cards are used for a variety of applications, especially those that have cryptography built in, which requires manipulation of large numbers. Thus, chip cards have been the main platform for cards that hold a secure digital identity. |
 An example of a master card |
 An example of a phone card |
Integrated Circuit Memory Cards IC memory cards can hold up to 1-4 KB of data, but have no processor on the card with which to manipulate that data. Thus, they are dependent on the card reader (also known as the card-accepting device) for the processing and are suitable for uses where the card performs a fixed operation. |
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Optical Memory Cards Optical memory cards look like a card with a piece of a CD glued on top - which is basically what they are. Optical memory cards can store up to 4 MB of data. But once written, the data cannot be changed or removed. Thus, this type of card is ideal for record keeping - for example medical files, driving records, or travel histories. |
 An example of a security card |
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