Often on buses you see adverts covering over the windows, but the adverts cannot be seen from inside the bus and the passengers can still see out.
This is simply a fine mesh with black on looking-out side and adverts on the looking-in side.
Insect screens are also a fine mesh. Why not print something on the outside to make it a combined insect screen and privacy screen, while keeping it black on the inside so you can still see out?
You could even have seasonal themes.-- b153b, Sep 12 2023 I should be clear that I want to be able to see out, so the screen needs to be black on the inside rather than printed at the way through.-- b153b, Sep 13 2023 This is camouflage under another flag.-- minoradjustments, Sep 15 2023 I'm really surprised no country has ever put forward a camo-pattern design for their national flag. Maybe I should post this as an idea...-- hippo, Sep 15 2023 random, halfbakery