Cards brought to casinos?

• They may be sought-after in bars
• They may be shown at a door
• Dog tags
• Fake ones are from out of state
• Fingers, for short
• Cards checked at the gate, briefly
• Requirements for viewing some films
• Needs at customs
• Proof-of-age items, for short

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