I currently also use another app for viewing my TV Remotely, because I used to have issues with Channels Remote Access. (Audio would stop, has since been resolved). But it would be nice to have a small lock in the options that show up when you touch the screen to make it lock the screen so that when you are carrying the phone it doesn't change channels or stop playback.
For instance i use it a lot at the gym and when moving machines, I throw it in my pocket. I use the other app currently so that I can lock the screen.