A few months ago Win 10 got wonky on my SSD, and rather than waste time trying to fix it, I wiped the drive and did a clean install. I never removed the ProScan activation before doing so. I was somewhat surprised that when I reinstalled ProScan after the clean install, it was already activated. My assumption was that it "phoned home" automatically upon first running, and since the unique hardware hash matched the previous install, it activated without my having to re-enter the registration.