Abstract: A monitoring device (1) with a safety sensor (4) designed for performing a protection field monitoring. A configuration unit (8) is provided for configuring protection fields (7) for the protection field monitoring performed with the safety sensor (4). The configuration unit (8) has a graphical drawing interface (22) in which a graphical information of a hazard region (2) within which a protection field (7) is to be configured is superimposed. Elements of the graphical information are used for configuring the protection field (7).

Abstract: A sensor array (100) with one or more sensors (201-204), with one or more operating means (101-104), each of which labels an object (801, 802), and with a processing unit (501) that is connected to the sensor or the sensors (201-204) via a communication connection (401), wherein each sensor (201-204) is designed for reading and unambiguously identifying an operating means (101-104). In each sensor (201-204), the time at which an operating means (101-104) was detected, the operating means identification of the operating means (101-104), a sensor identification that unambiguously identifies the sensor, and a quality variable q(t, s, b) determined based on time, sensor and operating means for the detection of the operating means (101-104) is sent to the processing unit (501). The invention further relates to a corresponding method.