Display device for displaying a price and/or product information

1. A self-checkout system, comprising

a base station configured to communicate with a number of display devices, and

at least one display device comprising:

a memory stage configured to store a product data set which was received in a communication with the base station via a first radio interface of the display device, wherein the memory stage comprises an availability data set linked to the product data set and with the aid of which the availability of the product data set can be controlled, and

a second radio interface configured to perform RFID or NFC communication with a self-checkout device,

wherein the display device comprises a processor configured to process a self-checkout request received from the self-checkout device and transmit the product data set via the second radio interface,

wherein the self-checkout system is configured to transmit an individual product data set for a particular user of the self-checkout device or for the self-checkout device to the display device,

wherein the memory stage is configured to be coupled to energy supplied from the self-checkout device to the second radio interface, such that the energy supplied from the self-checkout device to the second radio interface provides energy to the memory stage.

2. The self-checkout system according to claim 1 , which is configured to transmit individual product data sets for the particular user of the self-checkout device or for the self-checkout device to all or to selected dis play devices.

3. The self-checkout system according to claim 1 , which is configured such that identification data can be queried by the self-checkout device upon entering a self-service store with the aid of a terminal and transmitted to a merchandise management system where the individual product data set is generated in order to make available an individualized offer for the user.

4. The self-checkout system according to claim 1 , wherein the processor is configured to control the availability of the individual product data set for the self-checkout device with the aid of the availability data set such that the individual product data set is transmitted upon the self-checkout request only to the self-checkout device.

5. The self-checkout system according to claim 4 , which is configured such that, for other self-checkout devices, other product data sets are stored in the display devices and transmitted upon another self-checkout request to the other self-checkout device that made the other self-checkout request.

6. The self-checkout system according to claim 1 , wherein

the processor is configured to check the availability data set during the processing of the self-checkout request and to only transmit the product data set when it is available.

7. The self-checkout system according to claim 6 , wherein

the availability concerns the product data set, and

the processor is configured to check the availability data set to determine whether the product data set can be transmitted or not, and to process the self-checkout request accordingly.

8. The self-checkout system according to claim 6 , wherein

the availability of the product data set concerns an availability in time in which the product data set is available, and

the processor is configured to check the availability data set to determine whether the product data set is available limited in time, and to process the self-checkout request within the available time with the product data set, or outside of the availability in time with another product data set, or not at all, or by internal registering and/or communication to a merchandise management system.

9. The self-checkout system according to claim 6 , wherein

the availability of the product data set concerns the availability of its amount, and

the processor is configured to check the availability data set to determine whether the product data set is limited in its amount, and to process the self-checkout request within the limitation of the amount with the product data set and, if the limitation of the amount is exceeded, to process the self-checkout request with another product data set, or not at all, or by internal registering and/or communication to a merchandise management system.

10. The self-checkout system according to claim 1 ,

wherein the processor is configured to receive and store user and/or device identification data for identification of the user of the self-checkout device and/or of the self-checkout device when processing the self-checkout request.

11. The self-checkout system according to claim 9 , wherein the processor is configured to receive and store user and/or device identification data for identification of the user of the self-checkout device and/or of the self-checkout device when processing the self-checkout request and, configured to check the availability of the amount, taking into account a limitation of the amount per user or per self-checkout device.

12. The self-checkout system according to claim 8 , wherein the processor is configured to receive and store user and/or device identification data for identification of the user of the self-checkout device and/or of the self-checkout device when processing the self-checkout request, and is configured to check the availability in time, taking into account a limitation of the amount per user or per self-checkout device.

13. The self-checkout system according to claim 10 , wherein

the processor is configured to deliver the identification data to the base station during communication via the first radio interface.

14. The self-checkout system according to claim 13 , wherein

the processor is configured to deliver only the identification data to the base station for which a confirmation of the user of the self-checkout device is present as a consent for storing the product data set received by the display device, the confirmation being for carrying out a payment transaction for the product data set.

15. The self-checkout system according to claim 1 comprising

at least one of the self-checkout device, comprising:

a device radio interface which is compatible with the second radio interface of the display device for the RFID or NFC communication, and

a control stage configured to control the self-checkout request via the device radio interface to the display device for transmitting the product data set from the display device via the device radio interface to the self-checkout device.