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Some services scan the dark web, data broker sites and people-search sites for Social Security numbers, addresses, driver's license numbers and other identifiers.—Kurt Knutsson, FOXNews.com, 30 May 2026 Being metal-poor is one of the identifiers the scientists used to figure out which stars formed in the same dwarf galaxy.—Julian Dossett, Space.com, 27 May 2026 Instead of starting with a card token, the transaction may begin with an alias, such as a mobile number, a name or another identifier mapped to an account number.—Muhammad Azeem, Forbes.com, 26 May 2026 Materials must carry verifiable physical identifiers that are tamper-resistant and can be independently analyzed.—Jennifer Bringle, Footwear News, 26 May 2026 See All Example Sentences for identifier