Teenagers/college students do this sometimes out of boredom or for the minor thrill of being sneaky. I've never seen it as an out-of-control practice in the U.S

Teenagers/college students do this sometimes out of boredom or for the minor thrill of being sneaky. I've never seen it as an out-of-control practice in the U.S., but it happens in almost every movie theater. I've seen people do swaps when they realized they hated the movie they were at and walked out, found another movie that ran about the same time and went there. (This tool doesn't sound like it would help that, though.)