Sitting in LIT right now and I saw a TSO walking through the terminal area with what looked to be a handheld scanner of some sort. He stopped to talk to a couple of flight attendants and asked them if they liked his "FIDO"?.

Now as pick up lines go, it was pretty weak and they were suitably unimpressed

On the return trip, he was flanked by 2 other TSOs and they were looking at the instrument and waving it from side to side.

I looked and the Star Trek convention isn't in town, so what is this thing and has anybody else seen one?