The scripting will be in Lua and so you should be able to use any networking library that can work with lua (eg see LuaSocket: Network support for the Lua language). I expect that you will be able to send commands to Dorico via the scripting interface. However, if you want to build a full-featured remote control mobile app then this would need a far more detailed API than just the ability to send commands. This is a very interesting request though, so I’ll add ‘Remote Control API’ to the list of plugin feature areas we’ll look at (see the top of this thread).