 DATE: When Chance is watching himself on the large screen in the  store window display, he uses his home remote control to try and  change the channels on that set, but it controls another TV instead.  However the remote is of the earlier "ultrasonic" technology, and  these sound waves DO NOT pass through glass at the required strength  needed to work. Those of us born before the movie can recall that  jiggling your keys would make a remote controlled TV unwittingly  change channels, or turn off and on. At about this same time the now  common "infrared" RCs were coming out, albeit at outrageous prices.  These signals CAN in effect pass through glass, despite some losses  due to reflection. For the scene to be technically correct they  should have used an IR remote, which would not make those "ringing  bell" metallic sounds.