Air travelers without a REAL ID or passport could be required to pay a fee to get through airport security.

The Transportation Security Administration has proposed a "modernized alternative identity verification program" that would charge travelers $18 to confirm their identity if they don't have an acceptable form of ID , such as a REAL ID or passport. The proposal was published in a notice Thursday on the Federal Register .

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Under the "technology-enabled" program, a traveler would be required to pay a non-refundable fee of $18 to request an alternative identity verification in order to get through airport security. Once approved, the identity verification would be valid for 10 days.

But travelers who pay f

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