VIENNA INSTRUMENTS adopts the "VIENNA Key" (SyncroSoft USB Dongle). The VIENNA key is not included with each VIENNA INSTRUMENTS product package, so you may purchase it separately.
The VIENNA INSTRUMENTS product (i.e. the STANDARD library, EXTENDED library, etc.) purchased with this VIENNA key must be stored (*activated) and connected to your computer when you start or use the software.
In order to download (storage/activate) the product license information on the VIENNA key, an internet connection environment is required.
Furthermore, one VIENNA key can store multiple VIENNA INSTRUMENTS products together ("add") or "move" license information from the VIENNA key to another VIENNA key, but one license information cannot be "share" with multiple VIENNA keys.