A smart card, as the name suggests, is a secure microchip that enables user authentication by generating, storing, and operating cryptographic keys. Smart card authentication works with the help of smart cards, smart card devices, and authentication software. Smart cards are a strong form of authentication with cryptographic keys which is protected logically and physically, making it hard to compromise. Smart card authentication is a two-step login process that uses a smart card. The smart card stores a user’s public key credentials and a personal identification number (PIN), which acts as the secret key to authenticate the user to the smart card. A smart card enhances security—you can’t gather user details (such as a PIN) by tampering with these cards.