title: How IR Remote Control Apps Work?
body: <p>After a lot of searching, I couldn't find anything useful at all! Example of such app is this: <a href="https://play.google.com/store/apps/details?id=com.freeiruniversalremote" rel="nofollow">IR Universal Remote</a></p>
  
  <p>I am amazed at app because it also controls my old CRT TV. Controls air conditioner, projector etc. Does almost all types of job. I tried searching how could I do the same but no luck. Could you guys please tell me how to do it.</p>