Common Access Card (CAC)

A Common Access Card (CAC) is a secure identification card issued to members of the U.S. Department of Defense, including military personnel, civilians, and contractors. It functions as a government-issued driver's license and digital key, allowing holders to access buildings, networks, and sensitive information safely. The card contains embedded electronic chips that store personal identification data and security credentials, enabling secure authentication and electronic transactions. Essentially, the CAC enhances security by ensuring that only authorized individuals can access protected systems and facilities.