arivis Vision4D, like many other software packages, uses a licensing system built on a solution provided by a third party and based on software and hardware keys. When starting the software and periodically through the use of it, the licensing system will check for the availability of licenses permitting its use. The license key, as it is called, can be rooted to the specifics of the computer using a so-called "soft" key, or located on a removable USB dongle (hard key). The ability of the software to run is limited by its ability to communicate with those keys. To enable this, certain conditions must be put in place, namely, the licensing system driver must be installed, and the communication ports it uses must be open. This holds whether we are talking about a local license or a network license.