Why people are letting Worldcoin scan their eyes

Worldcoin is using silver orbs to scan people’s eyeballs. The idea is to collect biometric data to verify whether an online account holder is indeed a human being. In some countries, the project is paying people in crypto for scanning their eyes, while in others, Worldcoin has been suspended from operating. The BBC’s Leanna Byrne went to a scanning site in London to try it out.