The ball spin license is a single user, single computer license that allows you to see the calculated ball spin values. This license is non-transferable. These values are calculated based on the available club data. These values are used within the software regardless of whether a ball spin license is purchased or not. The license simply makes the values visible.
If you want actual measured ball spin data, you should consider the purchase of the P3 ProLaunch to go with your club sensing unit.