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.

Travelers who are headed to airports and hoping to use their Costco membership cards in place of Real IDs are out of luck. Travelers need a Real ID — or other acceptable form of identification — for domestic flights and for accessing federal facilities as of May 7.

The administration clarified what counts as REAL ID in a social media post, after the act was implemented last month.