Following up on what I wrote before,
on building a smart device by integrating it into glass...
The issue was whether glass could actually play that role.
Also the substances inside the glass, and compatibility with existing glass, were an issue.
The development side is also quite sweeping and broad...
But — doesn't it already exist!!!
I mean the case where a projector forms a screen without actually firing light!
You just attach glass on top of that,
and through brightness control or by switching the image on and off (going black), you can make it act as a mirror, right?!!!!
