Generate a unique ID for each contact

I need to assign a unique ID as an attribute to each of my contacts upon creation. Ideally it would be a numer counting up, but it could also be a combination of numbers and letters. I have been playing around with formulas, but can’t find a solution. Can anyone help me with this?

Hi @Christine , thanks for posting on this community.

How would generate this unique ID? Could a random uuid generator do the work (see this Google search)?

I suppose such a generator tool would work. I don’t care about the ID as long as it’s unique. But as in my other question here on the forum, the contacts are created via sign-up form, so how can I add the generated ID to them upon creation? Would an automation work?