Security, Safety and Surveillance Products Design Rapid Security Check Self-Service Express Lane by Yong Zhang Rapid Security Check is a self-service security express lane to improve the efficiency of safety checkpoints on subways and high-speed trains. People push the box to walk as usual, the box directly pushed through the check machine. This design adopts two layers of check at the same time, small items can be placed in the upper. The machine conforms to the principle of ergonomics and can ensure smooth screening process.