See Infared Light

Have you ever wondered what infrared light looks like? If you have, then all you need to see infrared is a TV remote and a smartphone!

Steps

Obtain a remote with a visible LED on it. Make sure it has batteries in it and that they are not depleted.
Grab a digital camera, video camera, camera phone, webcam or any other photography equipment with an LCD screen.
Turn the camera on, making sure it is in capture mode, and look through the LCD screen.
Point the LED on the remote directly at the camera lens.
Hit any button on the remote, except for mode-change buttons such as TV, as those do not emit infrared light.
You should now see a bluish-white light emitting from the dark panel of the remote, as in the image below. What you are seeing, is infrared light!

Make sure the batteries in the remote and the camera are not out of power.
Certain cameras are not sensitive to infrared light. If this does not work, try a different camera.
Turn the device which the remote controls off first, so you don't affect it using the remote.
Some camera cellphones are able to see infrared light.
You can also see the infrared light in a Nintendo Wii sensor bar. This method can be used to see if your sensor bar is functioning correctly.
Use a remote with a visible LED.