This is based on Copresence, which will probably ultimately include something like AirDrop. The audio portion would be used for neighbour discovery, before hand

This is based on Copresence, which will probably ultimately include something like AirDrop. The audio portion would be used for neighbour discovery, before hand off to e.g. wifi direct. Copresence is already used for the guest play feature of ChromeCast. Listening browsers require the extension. Neither require a Dev release of Chrome - 43.x is the current stable release. Nothing you'd call documentation. Copresence is part of Chromium, so you can dive into the source code if you wish. I'm attempting to reverse engineer the audible portion (just for fun). I'm tweeting as I go https://twitter.com/moreati https://twitter.com/moreati