TSA said a Costco membership card does not meet Real ID requirements, saying it will get you a cheap hot dog but won't get you on a flight.

In addition to Real IDs, passports, passport cards, U.S. Department of Defense IDs and DHS trusted traveler cards are considered acceptable forms of identification at TSA checkpoints. A full list of acceptable forms of identification can be found on the TSA website. The TSA says the list of acceptable IDs is subject to change without notice.