This disclosure pertains to device-monitoring systems, and in particular (but not exclusively) to detecting and deterring unauthorized use of electronic systems at distinct locations and during specific time periods. An apparatus consistent with the present disclosure includes logic, at least partially implemented in hardware, to receive an entrance message. The entrance message may include at least one policy for the manner to which a device is to be operated when present within a device restricted area. The apparatus may also include logic to send an acknowledgement notification to indicate receipt of the entrance message and an agreement to abide by the at least one policy. Furthermore, the apparatus may also include logic to detect an attempt to execute an action contrary to the at least one policy.