Abstract: An electronic device comprises a wireless unit, a control unit starting up the wireless unit at a predetermined startup time and a storage unit, wherein the wireless unit queries a wireless base station about a message and, when the message addressed to the electronic device exists, receives the message from the wireless base station, the control unit, when the message received by the wireless unit is an erase message, executes a process of erasing data stored in the storage unit, and the control unit, whereas when the message received by the wireless unit is not the erase message or when there is not the message addressed to the electronic device, stops the wireless unit.

Abstract: A system manages resources among groups of workers that are connected to one another through a network. The system maintains the security of the resources and improves the operations of the groups. Each group manages the rights to use resources such as windows, objects, and data belonging to the group. Each group is allowed to use only resources whose rights to use are allocated to the group. The groups may exchange the resources among them through a job monitor (2). The job monitor automatically handles the rights to use the resources among the groups according to the working conditions of the groups, procedures, and a job definition form (11). The groups independently and cooperatively carry out jobs. The system employs telephones and pagers to access the members of the groups if they are absent from predetermined locations, to improve the operations of each group.