Related Clues:

• Points to, maybe
• Cards from DMVs
• Nametags, for short
• Proofs of who you are, for short
• Two forms of them are found in 18-, 38- and 60-Across
• Boarding requirements, briefly
• Requests at security lines
• Students' cards, briefly
• SSNs and such
• Entry requirements, at times
• Some theft targets
• They're checked at check-ins
• Names, initially
• Beer-purchasing needs
• Security checkpoint requests