Abstract: A method is disclosed for operating an electronic data processing system (10) operable under an operating system. The electronic data processing system has a boot system (13) for selectively loading an operating system from one of a plurality of storage media (12, 30). The boot system is accessible to an external user after the user executes an identification protocol with the boot system. The identification protocol is a challenge-response protocol based on a challenge generated by the boot system. More particularly, the challenge is randomly generated by the boot system and communicated to the user in an outgoing message and the user generates a response to the challenge as an incoming message to the boot system. A specific application is related to an electronic data processing system, and to a weighing scale (1), where the authentication system includes the electronic data processing system.

Abstract: A method is disclosed for operating an electronic data processing system (10) operable under an operating system. The electronic data processing system has a boot system (13) for selectively loading an operating system from one of a plurality of storage media (12, 30). The boot system is accessible to an external user after the user executes an identification protocol with the boot system. The identification protocol is a challenge-response protocol based on a challenge generated by the boot system. More particularly, the challenge is randomly generated by the boot system and communicated to the user in an outgoing message and the user generates a response to the challenge as an incoming message to the boot system. A specific application is related to an electronic data processing system, and to a weighing scale (1), where the authentication system includes the electronic data processing system.

Abstract: A weighing scale (1) for a retail store counter includes a housing (2), a load-receiving platform (3) on top of the housing, and operating components (27) enclosed therein, including a weighing cell (24). A load-transmitting mechanical connection (25) couples the weighing cell to the load-receiving platform. Analog and digital weighing electronics convert electrical weight signals of the weighing cell into digital weighing results. A touchscreen display panel (7, 22, 23) interacts with a human operator, and is configured as a layered assembly with a liquid crystal display (23), a projected capacitive (PCAP) touch screen (22) with a plurality of touch-sensing points, and a protective glass plate (21) on top of each other. The layered assembly is integrated horizontally in the load-receiving platform facing the human operator. The top surface operates as a load-receiving surface (45) a touch field keyboard (40, 41, 42, 47) and a display window (43, 46, 48).

Abstract: A weighing scale (1) for a retail store counter includes a housing (2), a load-receiving platform (3) on top of the housing, and operating components (27) enclosed therein, including a weighing cell (24). A load-transmitting mechanical connection (25) couples the weighing cell to the load-receiving platform. Analog and digital weighing electronics convert electrical weight signals of the weighing cell into digital weighing results. A touchscreen display panel (7, 22, 23) interacts with a human operator, and is configured as a layered assembly with a liquid crystal display (23), a projected capacitive (PCAP) touch screen (22) with a plurality of touch-sensing points, and a protective glass plate (21) on top of each other. The layered assembly is integrated horizontally in the load-receiving platform facing the human operator. The top surface operates as a load-receiving surface (45) a touch field keyboard (40, 41, 42, 47) and a display window (43, 46, 48).