Validate security code?

Hi

I'm looking to create a method for anyone to check that a member of our group is current – each member is allocated a random security code that changes each year and I want anyone to be able to confirm that "Fred Smith" has verification code "45806782".

I'm thinking 3 inputtable text fields that would then say "Fred Smith 45806782" is valid but "Freddy Smith 45806782" and "Fred Smtih 123456789" aren't.

I've tried the usual Google searches etc but haven't had any joy.

Does anyone have any thoughts please?

Thanks

thestormdragon