Would you like to know more about FlashBack Express or screen recording software in general?
In some older versions (like Version 5), you might be asked to register with your email address to receive a free "key" via email to unlock the software permanently, but this is a free registration process, not a paid purchase. FlashBack Express vs. FlashBack Pro flashback express license key
Most current versions can be downloaded directly from the official FlashBack website and used immediately without activation codes. Would you like to know more about FlashBack