Sometimes a futuristic technological innovation will do nothing more than simply remind us it's probably better to stick with what we've been using.
The gist is the glass is transparent when no-one is inside it and it magically turns opaque when someone is.
Only it's activated by a 35-second motion sensor so if you're being rather leisurely about your drop-off, you could well find yourself in full view of the street.
This begs the question of quite why you have to see into a public toilet in the first place? For years automatic toilets have had solid walls, no windows and no problems.
It's not like you go perusing down the street peering into each one to select the finest cubicle into which to make your deposit.
You just go.
A total waste of money and time...