For user registration, I have disabled "Require e-mail verification when a visitor creates an account." to allow user create their own password at the registration form. Now, I wonder how to limit the password characters to minimum 6? I have tested several times, it seems drupal doesn't restrict any password characters even user keys in just 3 characters.
1 Answer
You might be looking of Password policy module
Features
Current constraints include:
Complexity constraint
Digit constraint
Letter constraint Letter/Digit
constraint (Alphanumeric)
Length constraint
Uppercase constraint
Lowercase constraint Punctuation constraint
Delay constraint Username
constraint Digit placement constraint
History constraint (checks
hashed password against a collection of users previous hashed
passwords looking for recent duplicates)
Also checkout this Quick demo.