Lots of trips. We've been looked at slightly once--they left our luggage behind and we had to go back and pick it up two days later. My wife spending forever talking to the luggage people and to get her to come along (there was nothing they needed to talk about and we had people outside waiting for us) I headed for the exit. I get to the exit with the cart with 4 large suitcases/no carryons and that draws the interest of a customs guy who starts running them through his x-ray. At this point she shows up and explains what happened, end of search.

Years later she tripped the radiation alarm at the exit and nobody responded. Admittedly the alarms are set quite sensitive. Even the initial scanner she tripped that was manned they simply filled out a form as to why--completely taking her word for it (the card the lab gave her was sitting in the pocket of the jacket she didn't wear instead of the one she did), no attempt to locate the radiation source (she was *NOT* separated from her carry-on) and that was that.

The only problem I've ever had with my camera there was someone at the old Hong Quao (Shanghai) airport who wanted me to check my camera bag thinking it was too heavy.