Microchip. Scanning electron micrograph (SEM) of a microchip from a chip and pin credit card. The circuitry is composed of tracks made by various deposition and etching techniques. The integrated circuit is embedded in the surface of a credit card where it stores information, such as the card number, the cardholder's name, and security data. The purpose of chip and pin technology is to help reduce counterfeiting and credit card theft by making it difficult for anyone to use a card that is either not genuine or is not their own. Magnification: x29 when printed 10cm TALL.