A product key activation code is required to activate Bartender 2016 and access its full features. Without a valid product key, you may be limited to a trial version or experience restricted functionality.

It is important to note that by 2021, BarTender 2016 had reached its "End of Life" (EOL) for standard support. Seagull Scientific has since moved toward a subscription-based and more modern perpetual model with versions like BarTender 2019, 2021, and the current 2022 release. Seeking a key for 2016 is increasingly difficult because the activation servers for older versions are eventually retired, making even some legitimate keys hard to reactivate on new hardware. How to Get BarTender for Free Legally