The invention relates to a display device (2-19) comprising a storage stage (50) for storing a product data set (PD1-PD3) which was received in a communication with a base station (25, 26) via a first radio interface (44) of the display device (2-19), and comprising a second radio interface (45) for communication in particular for RFID or NFC communication, with a self-checkout device (57), which display device (2-19) is designed to process a self-checkout request received from a self-checkout device (57) for the purpose of transmitting the product data set (PD) via the second radio interface (45).