Patent ID: 8886559

Claim:
A system for detecting products comprising: a plurality of portable reading devices wherein at least one portable reading device is assigned to respective customers, wherein identification data for products to be purchased by a customer can be detected in a sales room regardless of location, and wherein the portable reading device has a control unit and a memory for buffering the identification data a receptacle unit located in an exit area of the sales room having a plurality of receptacles for the portable reading devices, a control device, wherein the identification data from the portable reading device can be read and transmitted and a registration device to output registration information identifying a product purchased by a customer, a payment unit to conclude a payment process based on the registration information, an optical control detection device located in the exit area of the sales room, to detect images of a preset number of products that is smaller than a total number of products presented for purchase by a customer and detected by the portable reading device, wherein identification data is assigned to the products by the optical control detection device and a verification device, wherein the identification data for the products detected by the optical control detection device are checked for conformity with the identification data of the products detected by the portable reading device so that, depending on a comparison result an actuation signal to continue sales to the customer and initiate a payment process or a correction signal interrupting the sales process is generated, and wherein the payment process is completed without weighing the products if the actuation signal is generated by the verification device.