Oh, I don't think it's an especially good idea, I just think that's the notion behind it. I expect most of what goes on with these is marginally helpful in a real situation, at best, and few measures pass even a very generous cost/benefit analysis, and that's before you factor in psychological harm.
If this particular effort is effective, I expect it has more to do with discouraging shooters from firing in the first place (they may hesitate to "waste" shots on a window if they aren't sure people are behind it) or to slow them down. For exactly the reasons you note, I don't see it being very effective against someone who's decided that they definitely are going to shoot into that room.
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It's to prevent someone from aiming shots through the door by looking through the window. They could still fire through it randomly, of course.
The first shot through the window is going to blow away the cardboard. If it doesn't, the person can push it out with their hands.
Most of this is security theater. Consultants get paid millions of dollars to come up with this nonsense that doesn't hold up to an ounce of scrutiny.
Oh, I don't think it's an especially good idea, I just think that's the notion behind it. I expect most of what goes on with these is marginally helpful in a real situation, at best, and few measures pass even a very generous cost/benefit analysis, and that's before you factor in psychological harm.
If this particular effort is effective, I expect it has more to do with discouraging shooters from firing in the first place (they may hesitate to "waste" shots on a window if they aren't sure people are behind it) or to slow them down. For exactly the reasons you note, I don't see it being very effective against someone who's decided that they definitely are going to shoot into that room.
Ah that makes sense.