👉 Card computing is a security technology that uses a physical card, typically a credit or debit card, to authenticate transactions and protect sensitive financial information. When a user makes a purchase, the card's embedded chip generates a unique digital code or cryptographic signature that is transmitted to the merchant's point-of-sale (POS) system. This process, known as contactless or near-field communication (NFC), ensures that the cardholder's personal and financial data are not exposed during the transaction. The chip also stores a secure token that represents the card's account, which is used to verify the transaction's authenticity. This method significantly reduces the risk of fraud and unauthorized access, as the card itself cannot be easily cloned or stolen. Card computing is a cornerstone of modern payment systems, providing both convenience and robust security for online and in-store transactions.
