korttitunnistus

Korttitunnistus, also known as card authentication or card verification, is a process used to confirm the identity of an individual or the legitimacy of a payment card. This is typically achieved by comparing information presented by the cardholder with data stored on the card or in a secure database.

There are several methods of korttitunnistus. The most common involves a magnetic stripe or EMV chip on a payment card. When a transaction is made, the card is swiped or inserted into a reader, which extracts data from the chip or stripe. This data, along with information provided by the cardholder, such as a PIN (Personal Identification Number) or a signature, is then verified. For payment cards, this verification often happens in real-time with the issuing bank.

Beyond financial transactions, korttitunnistus can also refer to identity verification processes that use a physical card, such as a national ID card or a driver's license. In these cases, the card might be inspected visually, or its security features might be scanned using specialized equipment to ensure it is authentic and has not been tampered with. Some systems may also require a PIN or biometric data, like a fingerprint, to further confirm the cardholder's identity. The primary goal of korttitunnistus is to prevent fraud and unauthorized access.