your license with Seagull Scientific's activation servers.
If you already own the software and simply need to find your key to reactivate it, BarTender keys are 16-digit alphanumeric codes usually found in the following places:
The search for a "BarTender 2016 R9 product key" typically leads to one of two paths: legitimate retrieval of a lost key or unauthorized "crack" stories. How to Find Your Legitimate Product Key