There should be an open standard to stream something RDP-like to in-room devices over bluetooth, so you can use your phone as a touch screen to set up things like printers and wifi routers without installing any evil fucking corporate app. 

 @ebc06089 doesn't IPP do this? 

 @ebc06089 this is a good idea but will never eventuate. These evil companies love having some shit arse app on your phone.