"Meet my two twin sons, Collision (pronounced cole-eye-zon, we call him Cole for short) and Collision (pronounced call-iss-on, though we like to call him Colin)."

Luckily you are such a good parent that your twin sons would never dream of impersonating each other online.

And of course the Date Of Birth is really Date/Time of Birth.

The point is that "this is unique enough" is not a good standard when the data is sketchy or even subject to manipulation. The corporate ID numbers otherwise being discussed are unique by fiat.