What is the main use of a smart card in terms of authentication?

The main use of a smart card in terms of authentication revolves around its ability to verify identity. Smart cards contain embedded integrated circuits that can store and manage authentication credentials securely. When a user presents a smart card, the card can communicate with a card reader and verify the identity of the user through various means, such as digital signatures or encrypted data.

Smart cards are widely used in various applications, including secure access to office buildings, internet banking, and identity verification for government services. Their design allows them to operate with encryption algorithms, making them a secure means to authenticate users without exposing sensitive information. This level of security is crucial in situations where identity verification is necessary to maintain data integrity and protect against unauthorized access.

While smart cards can have other capabilities, such as storing files, tracking location, or generating passwords, their primary function in the context of authentication is to provide a reliable method for verifying the identity of users. This ensures that only authorized individuals can gain access to sensitive information or restricted areas.