Contact Chip Metal Cards encapsulate a bare contact IC chip within a metal card body, with exposed metal contact points on the card surface. Data reading and writing are completed by physical contact with a card reader. They combine the durable feel of metal with the high security of contact chips and are widely used in finance, membership systems, access control, government affairs, and encrypted access management. The mainstream card size is the standard bank card size of 85.5mm × 54mm.
