In fact, if you removed the sensor, you could reuse it and connect it to the IR transmitter. It wasn’t clear how you could easily package the RF transmitter and the remote.

Along with many impressive features, the Galaxy Note 4 has a built-in infrared sensor that can turn your phone into a universal remote. And here's how.

A streamlined method of adding touchless swipe right, swipe left, proximity, and tap control to any device by using a digital proximity sensor and two discrete infrared emitters ...

[SpiralBrain] needed to figure out the coding scheme used by an IR remote control so that he could use it with his own project. He built an IR receiver board for the PICkit 2 and figured out how to… ...