ZECURITY

Lane four. Every bag goes through the scanner, and the zec bag shows up as a flat black rectangle.

LANE 4 OPEN. OPERATOR SEATED.

Low-poly airport checkpoint: an operator with his back turned, an x-ray monitor showing two clear bags and one solid black rectangle, a guard and a sweating traveler.

Click a bag, press SPACE or hit SCAN. The queue is real, the bags are not.