Companion can be used to register keypresses or mouse movements to trigger some other action.

Open Settings and enable the events you need:
Keyboard events (keypress, keyrelease)
Mouse button events (mousepress, mouserelease)
Mouse move events (mousemove)
Mouse scroll events (mousescroll)
Edit Graph Triggers.Add Trigger.Event Type, choose one of:Key PressKey ReleaseMouse PressMouse ReleaseMouse MoveMouse Scrollmousemove fires really often, so only enable it if you need it.If input seems to not be detected