The TSA is clarifying that one type of identification — a Costco membership card — is in fact not a valid form of Real ID accepted at the airport security checkpoint.

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The TSA clarified that a Costco membership card is not a valid Real ID for airport security checkpoints, despite some travelers' confusion after new Real ID rules took effect.

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.

TSA reminds travelers that a Costco card is not a valid form of ID for flying, as new Real ID rules now require federally approved identification.

Costco membership cards will not function as Real IDs at airports, the TSA said on social media.

Yes, it does have your picture, your name and a star, but a Costco membership card is not a replacement for a Real ID.

Last week, TSA debunked a rumor that claimed airport security agents would accept the grocery store membership card in place of a Real ID.

REAL ID members only: Why TSA advises against using Costco cards as valid identification and what to know about travel in Tennessee.

If you don't have a Real ID-compliant license, don't try to use your Costco card or other membership ID — it won't work. Here's what will.

The TSA attempted to dispel rumors on social media that using a Costco card is equivalent to using a REAL ID to get through airport security.

Costco membership cards may help T.S.A. agents confirm your identity if you have no other form of identification but they are not a replacement for a government-issued form of identification.