Why do I need DeviceLock if I can use Group Policy?
Unfortunately, standard access control solutions coming with Windows operating systems do not allow the assignment of permissions for USB and FireWire ports as well as for WiFi and Bluetooth adapters. Anyone can bring and plug a tiny device and download hundreds of megabytes of proprietary information. You do not have to be an administrator to use one of these devices, and you can not manage WiFi, Bluetooth, USB and FireWire devices via Group Policy.