A method of utilizing an intellectual property grouping owned by a patent entity to generate income. The height map is referenced to a physical reference surface of the substrate table. The method also includes authenticating the upper layer packet at the egress edge device using the virtual private network identification. The group requires at least one authenticator for file creation and file uploads. The first module includes a module recognition unit recognizing whether the communication module of the terminal is within a preset distance; and a memory unit storing network configuration information to be used when the second module accesses the router.