Product authenticity verification or anti-counterfeit feature

@distributorsangel The generally accepted method is using a computer :wink:

But more serious: you solicite code, which, according to the Forum Guidelines, is not done. Try it out yourself, if you get stuck, we will help. If you cannot or will not, there is a whole fleet of Wix Coders out there who can write it for you, at a cost (but no, not me).