How to make a one way glass for NPCs

[Espinete87]

Hello guys, i have followed like 3 tutorials different in internet, about create 1 way glass in hammer editor for Gmod, no one is working for my idea, becouse i want a one way glass which NPCs CANT see you, and keep acting like normal.

Does somebody knows any way to do it?

You can see here the reaction. https://youtu.be/svOyYMIlZ5M

[Matt]

Try the Block LOS texture. It's a tool texture; which means you need to place it inside your glass.
Third one down.

[Espinete87]

Opprinnelig skrevet av Mλtt:

Try the Block LOS texture. It's a tool texture; which means you need to place it inside your glass.
Third one down.

Your my hero, i was trying to find a list of materials and their properties, but i could not, probably wrong words to search for it.
This is the result, thank you very much, you hit in the target! and i dont need to put bad visible textures like it shows in other tutorials, you can clearly see, thats important!
https://youtu.be/0Fa57FW6M-M