1. A system, comprising: a mobile device comprising a processing unit; and a controlling module for controlling the mobile device remotely, the controlling module comprising: a monitoring module for monitoring a use of the mobile device, the monitoring module comprising a policy setting module for determining a use policy for what use is permitted on the mobile device; and an application control module, executed by the processing unit of the mobile device, for controlling whether applications are allowed to run on the mobile device, wherein the application control module executes silently on the mobile device and cannot be disabled, the application control module comprising: an application blocking module for blocking an installation of an unauthorized application in accordance with the use policy; and an application authorization policy module for authorizing an installation of an authorized application in accordance with the use policy, wherein to prevent the application control module from being disabled, the application control module further comprises: a heartbeat monitoring module for automatically restarting the application control module if the application control module terminates.