Originally Posted by FliesWay2Much
Since the puffer is supposed to detect traces of explosives and anything else they set it for, I suppose there's no technical reason (other than physical space) why you can't take all of your carry-on stuff with you into the puffer.
Good on you for challenging the in-sight policy. You might want to have a credible source document listing of the number of screener/officer thefts handy when they say "Trust us."
Or just ask them to provide you in writing that they will be responsible for any loss that occurs while they have your items.