Originally Posted by
BRUpax
Forget "systems". It all comes down to passengers not preparing themselves in advance, same as security lines. Prior to reaching the aircraft I have taken out anything I need whilst seated. When I reach my seat I place those items on the seat and immediately proceed to place bag (and coat if applicable) in the overhead locker and taking my seat without delay. Same goes with security, I prepare as much as possible in advance whilst I watch people wait until actually at the belt before starting the process.
Τhere is very very little available place to arrange liquids electronics and stuff before security. Usually the first available space is just before the machine.