[user-the-name]

There's no such thing as a "one way tint".

https://en.wikipedia.org/wiki/One-way_mirror#Principle_of_op...

[nomel]

This is a simple implementation of a one way mirror.

Metamaterials have a chance at at: https://www.nist.gov/news-events/news/2014/07/new-nist-metam...