If you turn off the master computer or it crashes when the keyboard and mouse are controlling the other one, you're stuck. I would assume that this is not the

If you turn off the master computer or it crashes when the keyboard and mouse are controlling the other one, you're stuck. I would assume that this is not the case with Logitech Flow, since the keyboard and mouse genuinely do connect to both. Incidentally, 13 years ago, I used to use something very like what you're describing, back then it was called Win2VNC and X2VNC But the point I'm making is nothing to do with the seamless desktop thing, it's that the ability to switch input between different devices is something I'd like to be able to write code to control in all kinds of situations (time based, in response to events, etc), not just when the official software thinks I should or when I press the physical buttons on the device.