[istinetz]

>I'm not seeing any obvious advantage that World Id will have over these existing systems.

* it's more universal; not all the world are americans, using american systems. Good luck using a social graph, phone number or credit card for verification of somebody from Papua New Guinea. Or for somebody who is otherwise off the grid.

* if it works, it's less prone to hacking, since you control the points of registration, and you can verify that a physical human being is there to scan their retina