Hello, i am aware of the system preference that allows specifying a minimum length for patron passwords. i haven't dived into the code yet, but if someone that knows can save me some time: Perhaps Koha uses a regular expression of some kind that can just as easily be modified to also require, for example, some combination of symbols, digits and mix of lower and uppercase alphabets? i am sure that some such customization probably needs a good amount of testing and is not easily exposed as a configurable system preference just yet. Please give me your knowledge and thoughts. Thanks and regards, krishnan Pune, India Unlimited freedom, unlimited storage. Get it now, on http://help.yahoo.com/l/in/yahoo/mail/yahoomail/tools/tools-08.html/