A Control Access Card (CAC) is a secure form of identification used by businesses and organizations to control access to physical and digital resources. CAC cards are typically issued to staff members, contractors, and visitors, who can then use them to gain entry into controlled areas or to authenticate themselves online. The cards contain unique data that can be read by contactless scanners or used in combination with passwords and biometric devices for two-factor authentication. By investing in CAC technology, businesses can ensure greater security and control over who has access to their facilities and digital assets.