There are already airports which have pairs of sliding doors with a room between them, timed so there's a moment when the first door is closed behind you and the second one hasn't opened ahead, in which you're "detained".
As do many fast food restaurants and other buildings, I'm fairly sure it's meant to function as an air-lock, mitigating the equalization of outdoor and indoor temperatures and preventing drafts into the building. Additionally, you are not being detained in such a situation as it is up to your own agency to either manually open the door or activate the IR sensor. In the airport situation it does appear people are being detained because they don't seem to have the option of opening the exit door themselves.
In fact, there's a fuck ton of controlled-access places with systems which effectively do this.
Sure, if someone or group is occupying a building and they don't want people wandering around willy-nilly they can control access and 'buzz people in' or whatever. The airport situation is entirely different as it is essentially controlling access to the entire world, restricting ones freedom of movement.
So all in all, put a little thought into what your saying before a reflexive "nothing to see here."
As do many fast food restaurants and other buildings, I'm fairly sure it's meant to function as an air-lock, mitigating the equalization of outdoor and indoor temperatures and preventing drafts into the building. Additionally, you are not being detained in such a situation as it is up to your own agency to either manually open the door or activate the IR sensor. In the airport situation it does appear people are being detained because they don't seem to have the option of opening the exit door themselves.
In fact, there's a fuck ton of controlled-access places with systems which effectively do this.
Sure, if someone or group is occupying a building and they don't want people wandering around willy-nilly they can control access and 'buzz people in' or whatever. The airport situation is entirely different as it is essentially controlling access to the entire world, restricting ones freedom of movement.
So all in all, put a little thought into what your saying before a reflexive "nothing to see here."