Voters may have to present them: Abbr

• Proofs for purchase, sometimes
• User names, e.g
• Some minors have fake ones
• Picks from a police lineup
• Check-cashing needs, for short
• Fake ones are from out of state
• Therapy subjects
• SSNs, say
• Cards that prove your age: Abbr

Wiktionary Word definitions in Wiktionary
n. (plural of id English)