Some experiments in allowing multitouch psychophysics, with an initial focus on doing bimanual reaching on the web.
Turns out a lot of things don't translate, so I'm shifting focus to doing a mobile version first (which should more straight-forwardly support multi-touch).
Android debugging is greatly simplified by this process:
https://developers.google.com/web/tools/chrome-devtools/debug/remote-debugging/remote-debugging