Residents of São Paulo's outskirts explained why they chose to give over their personal data to the World ID project. Around 400,000 Brazilians sold their iris data for cryptocurrency.
Yup, I use my fingerprint for my phone because it's convenient, but require my pin (6 numbers) on boot, and my phone reboots a couple times each day (after a set time not using it). Anything more important uses a very long password.