I'v been testing a software called ATAS the past few days, it has a trial period of just 7 day, sadly for personal reasons i spent most of that time in hospital and wasn't able to test it properly.
so i tryed to reinstall it, demanded another login/pass, as expectied it didn't work.
i thought the software wrote some keys in my register so i can't reinstall it again.
so i went on my second OS that is installed on a different hdd (on the same computer).
tried a fresh install, and...it didn't work either.
my question is, how do they know ?!