I’m moving into a new apartment where the front door is a paneled glass door, so there isn’t a peephole in it. The apartment building itself has an external door that is locked and luckily there is a camera where we can buzz people in if they ring our unit. However, I’m still a bit worried about people coming into the building and knocking on our door and not being able to see who’s there without revealing myself. Has anyone else encountered this situation? Are there any alternatives I can consider? I realize that because of the style of the door a peephole can’t be installed anyway, but it would be helpful to know how others have handled it.