Seeing the unseen is one of the great things about using an infrared (IR) camera, and even the cheap-ish ones that plug into a smartphone can dramatically improve your hardware debugging game. But ...
The new Dallmeier DF4920HD-DN/IR is a weather-proof HD network camera with automatic day/night switching and integrated infrared illumination. The camera provides real-time full HD video (1080p/30) ...
I think that at some point in the future, smart phones will have a built in infrared camera. But for now, you are going to have to use an IR camera add on. This is the Seek Thermal infrared camera.