Theres an outfit called Square Off that has made literally this. They were about to deliver a 2nd gen version before covid hit and broke all the supply chains. Its still happening, but harshly delayed.

https://squareoffnow.com/

There's already many solutions for *dedicated* chess boards with electronic outputs -- they're common in major tournaments. (I.e. capacitive sensors under the squares). The point of OP's solution (as I understand it) is anyone can use their own, ordinary boards for this, with no purchase, using standard cameras.

I think it's awesome.

(I think magnetized self-moving pieces exist too, but they're not very impressive. IIRC it's just one 2-dof magnet under the board. But that's slow and more for show than utility. It'd be a handicap for blitz).

if you have to move both sides of the board, i dont think this is really a solution for blitz anyways?

There's currently a project in Kickstarter doing just that

https://www.kickstarter.com/projects/wondersubstance/phantom...