The machine is equipped with a bar code electronic bag locker: when storing things, press the "Save" button, and the locker will automatically print a password field, and the machine voice prompts: "Please take the password field". When the user pulls out the password paper, the corresponding door automatically opens, and the door is closed after storage. When taking things: scan the bar code paper directly at the scanning port, and the corresponding box door will open automatically. Voice prompt: "Please close the door after photographing the goods." Changshu Jinwangda Electronic Equipment Factory produces and sells automatic electronic bar code lockers and coin-operated lockers, which are suitable for supermarkets, libraries, department stores, museums, schools, stations and docks.