Coming from Shopify, this feels like a ZIRP (zero interest rate project). i.e. projects that need not bear any fruit in the next many years. Snark aside, this looks very cool, and I definitely see use cases in gaming (and maybe in web home pages--assuming you could get the client to turn on the web cam for an unknown site).

In the article I see no mention of accelerometers. Can one get nearly the same effect on mobile merely using these and not using the camera?