I work as a flight attendant and once as we waited just off the runway 
for another airliner to cross in front of us, some of the passengers were 
beginning to retrieve luggage from the overhead bins. The head attendant 
announced on the intercom, "This aircraft is equipped with a video 
surveillance system that monitors the cabin during taxiing. Any 
passengers not remaining in their seats until the aircraft comes to a 
full and complete stop at the gate will be strip-searched as they leave 
the aircraft."