US Patent 11983687 Terminal management system, terminal management device, and control method thereof

A terminal management device includes an acquisition unit, a detection unit, and a restriction unit. The acquisition unit acquires status information indicating the operating condition of the mobile terminal operated by a customer used for purchase processing of a commodity. The detection unit detects an error condition of the mobile terminal based on the status information acquired by the acquisition unit. The restriction unit restricts the purchase processing by the mobile terminal according to the number of error conditions of the mobile terminal detected by the detection unit.