Joomla Registration and this {uuid:}

So I am using the demo form for Joomla registration. I currently have a lot of users in that so I don't want to mess with it.
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I am altering the user form a bit to save some more info to another table. So for future links to things, is the {uuid:} the "id" in the database that I can use in another table to build that relationship?

Hi msreyes,
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The {uuid:} will give you a unique 128 character string that you could use. It might be better to get the new user id after the new user record is created and use that.
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Bob

lol.... I complicated this. Thanks Bob.