E-Mart has been developing a system that allows customers to check out on their own while looking into the future of life. The shelves and scanning stations are arranged in an instinctive sequential system so that users do not get confused when they have to check out alone, and the entire process can be completed smoothly with just the rotation of the arms without moving the torso. To achieve this, they studied human psychology and basic needs through extensive research and observation of shopper behavior.