Want to change the TV channel but the remote control is missing? No problem. This guy, Sam Noyoun, came up with an alternative.
Watch the video and have fun. 
I tried this on an ordinary flashlight and it didn’t work. I borrowed my uncle’s maglite and it worked. It’s cool. 
The Principle:
The disk from the floppy filters natural light and only let through the infrared light, thus what you are doing is an infrared LED.
