IDCARD

Set to 5 different clues across 5 published puzzles, most often “Airport security requirement, briefly” — The New York Times, Tuesday, 17 May 2011.

6 letters

Every clue on record, most used first

Airport security requirement, brieflyonce
The New York Times — Tuesday, 17 May 2011
It may be swipedonce
The New York Times — Tuesday, 3 June 2008
Security checkpoint itemonce
The New York Times — Wednesday, 8 March 2006
Proof, so to speakonce
The New York Times — Wednesday, 25 October 2000
Entry requirement, at timesonce
The New York Times — Saturday, 24 October 1998