Smart cards are often used by government agencies and private enterprises to secure physical and network access. Smart card technology uses an encrypted card (about the size of a credit card) for multifactor user authentication. Smart cards have an embedded cryptographic chip that is very difficult to replicate. As such, it is hard for an attacker to copy the smart card and use it to gain access. As long as the authorized user maintains possessio » Read more: Smart Card Technology Protects You