There are many programs controlled with hot keys. Your program allows type keys and key combinations in keyboard mode, but it's not very convenient. I think will be useful to construct some plugins which can connect directly one phone button and one key combination. For example, for presentations 1=Ctrl+l - start presentation, 8=Page down - next slide, 2=Page up - prev slide etc.
I'd like somebody publish an example of such plugin and detaild instructins for compilation.