The following types of identification are Secure and Verifiable:
Any Colorado Driver License, Colorado Driver Permit or Colorado Identification Card, current or expired 1 year or less. (Valid temporary paper license with invalid Colorado Driver's License, Colorado Driver's Permit, or Colorado Identification Card, expired 1 year or less is acceptable.)
Out-of-state issued photo driver's license or photo identification card, photo driver's permit current or expired 1 year or less.
U.S. Passport current or expired less than 10 years.
Valid foreign passport with I-94 or valid processed for I551 stamps. Exception: Canadian Passport may not have I-94 attached.
Valid I-94 issued by Canadian government with L1 or R1 status and a valid Canadian drivers license or valid Canadian identification card.
Valid I551 Resident Alien/Permanent Resident card. No border crosser or USA B1/B2 Visa/BCC cards.
Valid I688 Temporary Resident, I688B, and I766 Employment Authorization Card with intact photo.
Valid US Military ID (active duty, dependent, retired, reserve and National Guard).
Tribal Identification Card with intact photo. (U.S. or Canadian)
Certificate of Naturalization with intact photo.
Certificate of (US) Citizenship with intact photo.