Not the BTTF2 kind, no.
I was thinking about a window-sized single pixel LCD display, essentially, glued on top of the window's glass.
Unpowered it's transparent.
With power it's opaque, with no sunlight getting through.
Was something like that done before?
I remember thinking about it a couple of decades ago, and writing it off as something ludicrously expensive the Bill Gates' "smart home" might have.
But these days window-sized LCD screens are almost dirt cheap, and a single pixel thing like that should be even cheaper.
So, why not?
If no why, then where can i find one or how can i make one?
That is, should i waste a good spare laptop screen experimenting, or can i just go shopping?