... I used it in my bathroom to cover part of the window as a privacy screen. But I don't think that's what it's intended for. I also used it to repair a small white table. As Carlotta.foletti wrote, the film is opaque. There are window films that can be attached to the window with water as a privacy screen, which I think are perhaps more useful in this sense and in my experience also hold up well, but I have not found a 100% privacy screen.

it is an opaque white plastic covering, so it will obstruct vision and light