; or (B) a physical chemical identifier, possessing a unique physical or chemical substance or combination of substances, that— (i) is in or on a product; (ii) is machine readable; and (iii) is intended to authenticate the product or a dosage form thereof. . (2) Section 581(28) of the Federal Food, Drug, and Cosmetic Act ( 21 U.S.C. 360eee(28) ) is amended to read as follows: (28) Verification or verify The term verification or verify means— (A) determining whether the product identifier affixed to, or imprinted upon, a package or homogeneous case corresponds to the standardized numerical identifier or lot number and expiration date assigned to the product by the manufacturer or the repackager, as applicable in accordance with section 582; or (B) determining whether a product or a dosage form thereof is authentic using a physical chemical identifier described in paragraph (14)(B). .