Is it possible to share control of a web app over multiple computers? To be clear, I do not control the web app! For example, suppose I had a turn-based game that was supposed to be played hotseat. It would be nice to be able to take your turn on one computer then to pass control of the web app to another person to take their turn.
I understand that getting this working flawlessly with a generic web app would be very difficult, but are there any solutions that work with a reasonable subset of applications? I'd like any solutions to preferably be cross-platform.