A card with a built-in semiconductor-based integrated circuit. Also called a smart card. IC cards are capable of both reading and writing data, and have a larger storage capacity and greater durability than magnetic cards, so the data stored on them is not damaged by contact with magnets. In addition, because IC cards can be fitted with various security functions such as data encryption and configured to be compatible only with readers that have particular specifications, they are also excellent in terms of security and functionality. IC cards can be divided into contact cards and contactless_cards, depending on their structure and usage.