It is our special function. Named BB-100 black box function. You can see 2 cameras at the entrance side and 2 at the exit side. On each side, one camera can monitor the passenger bag, one camera can monitor the passenger face.
So on the system, you can see the intergrated information item by item: bags video-passenger face video-bags x-ray image
This will make sure that passenger will not lost their bags easily, and if find any threat, we can know who take the bags.