It probably won't make a difference to most of you but some forums (like Nintendo forums) that "require" codes (such as friend codes) are unique, there is only one of that 16 digit number (for that wii) console in the world.

What am I getting at? Would it be possible to add a option to the custom profile field page to add a tick box on weather a text field can or can not be the same as another users?



If I think of others, i'll post.

very very old topic. But I need a solution for this too (my post: http://community.invisionpower.com/topic/392928-custom-profile-field-with-must-be-unique-validation/?hl=%2Bunique+%2Bprofile+%2Bfield)