A holder, guide, or jig for sharpening tools is disclosed, in which the jig holds and orients a tool to be sharpened to properly align the tool on or against abrasive wheels, discs, or sharpening stones, thereby creating a fine, square, beveled edge on the tool, at a predetermined and accurately reproducible angle. An agent, such as software installed on-board the customer’s mobile equipment, measures parameters that are related to the network technology, and communicates the measured parameters to the service provider, over the communication network. The security device may determine a key, from a set of keys stored by the security device, that is unassigned, and may assign the key to the user.