FlyerTalk Forums - View Single Post - I think even BOS TSA would have caught this
Old Sep 21, 2007 | 10:43 am
  #9  
JennyElf
 
Join Date: Aug 2004
Location: BOS
Programs: UA 1P
Posts: 1,356
There are pictures here.

Pretty small. It's a smallish circuit board with a couple of LEDs in the shape of a star and a 9-volt battery.

LED name tags aren't uncommon if you google them.
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