Cred. cards, sometimes

• Age verification cards: Abbr
• They may reveal your age: abbr
• Needs at customs
• Cards shown to bouncers
• Picks out of a lineup, for short
• Cigarette seller's requests
• Age-verifying docs
• Picture cards?
• Need them to get in to some shows

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