Tool question

I was thinking about a tool that would be very useful in role play as well as building. I was wondering if it would be possible to make a flat prop, like a phx 1x1, have it have a material on it, then one “face” of it transparent like a one way window.

Just a thought really, I’ve sure people have thought of it, but I haven’t seen anyone try it yet.

Thanks.

If I recall correctly from my days of roleplaying, you can apply any texture to the storefront bars model (in useful construction props), and one side of it will be see-through.