I remember the world coin project as they was an airdrop in my country for which a user has to scan his/her iris. People went crazy thinking the same about this coin and participated in the airdrop. I still remember main stream media were using  this event to gain views. They were not that biased about it but they did talked about the issues.

Every human living has a unique iris and that can't be copied. Using the human iris they are trying to create a unique identity for verification. The problem that I also understood was if they sell this databse to a country that wants to control the world and its ecosystem. This is not a project that I think should be associated with as they are compromising a user's privacy.