Password rules

I always use the same password every time they like Ring say your password must include something special because none of the write their rules when you log in so you have no idea what rules the password was created by so a password easy to be remembered must be used = not secure at all. The only rules that make password secure it is length. Demand that password must be at least 15 and people can write whatever they will and you will have a very secure password for every password equal to or longer than 8 character is hard to crack.