Does the bar code on the Common Access Card store personal data issuance dates and expiration dates?

Yes, the bar code on the Common Access Card (CAC) contains encoded information, which includes personal data such as the cardholder's name, service branch, and the issuance and expiration dates of the card. This information can be accessed by authorized readers to verify the identity and status of the cardholder. However, the specific details encoded in the bar code may vary based on the card's version and security requirements.