Currently, I have some problem regarding some windows, which are dark-colored. During the day time, people outside the windows cannot see people inside the windows. However, during the night time, people outside the windows can see people inside the windows.
Some more, I cannot place bindings such as curtains as the owner of the house prohibit me from doing it. What methods I can use to prevent people outside the windows to view me?
Note: The room have these dark-colored windows and the room is at the first floor. The room is directly opposite of a 4 lane road and the room is rented.
Do let me know if further information are required.
Extra information: I search but can only manage to find the following picture that have similar characteristics as the windows that I am referring to: