Self-checkout store

A method for sales-operator-free operating of a sales device for goods, the method comprising:

• a shelf with automatic removal monitoring, the shelf comprising a communication device and at least two weighing cells supporting a rigid body forming a display area, the weighing cells providing signals corresponding to weight forces at areas of the rigid body, the shelf automatically detecting removed items, determining item data of the removed items, and sending, via the communication device, the item data of the removed items and a number of the removed items to a computing cloud;
• receiving, by a controller of the computing cloud, the item data of the removed items;
• adding, with the controller of the computing cloud, the item data of the removed items to a list of items intended for payment, the list of items intended for payment comprising items that have already been removed from shelves but have not been paid for, the shelves comprising the shelf with automatic removal monitoring;
• receiving, by the controller, an item number from a product scanner;
• adding, with the controller, a scanned item associated with the item number to a scanned list associated with the product scanner, the scanned list associated with the product scanner comprising scanned items that were placed in a shopping cart or a shopping basket during a present purchase and that require payment;
• identifying the product scanner at the sales device;
• collecting, with at least one sensor, data about present items in the shopping cart or the shopping basket when the shopping cart or shopping basket is located on a support plate of the sales device;
• and
• in a validating step, validating, with the computing cloud, that each item of the scanned list of items associated with the product scanner is in the shopping cart or shopping basket on a basis of:
• the data collected from the at least one sensor;
• and
• the list of items intended for payment,
• wherein in the validating step, the validating comprises:
• confirming that the data collected from the at least one sensor correspond to the scanned list of items associated with the product scanner, and
• confirming that each item on the scanned list of items associated with the product scanner is on the list of items intended for payment that comprise the items that have already been removed from the shelves but have not yet been paid for,
• wherein the method further comprise removing the items from the list of items that are intended for payment based upon the items being included in a concluded payment transaction.