chip and PIN
noun /ˌtʃɪp ən ˈpɪn/
/ˌtʃɪp ən ˈpɪn/
(also chip and pin)
[uncountable]- a system of paying for something with a credit card or debit card in which the card has information stored on it in the form of a microchip and you prove your identity by typing a number (your PIN) rather than by signing your name
- Chip and PIN is designed to combat credit card fraud.