Related Clues:
- Proof you are you (2 words)
- Employee pocket attachment
- It might open doors
- Document with photograph, age etc identifying a person
- Item shown at a security checkpoint
- Item in a student's wallet
- Security desk request
- Proof of who one is
- Bouncer's request
- Driver's license, e.g., in brief
- What a student may swipe
- Bouncers might request this if you're going to music halls perhaps to see bands at The Centre from Dido to Queen
- Proof of membership
- Detective does a twirl in front of Number 10 - presumably, it's revealing who he really is?
- Common proof of age