When I arrived at Ezeiza last November I was caught somewhat by surprise when the immigration officer demanded my thumbprint. It was the first time I’d ever been asked to do that anywhere in the world and is something I have been against as a matter of principle. I didn’t argue naturally.
Now read this
No passport required as departures from Singapore airport set for 'seamless' travel from 2024
Biometric data, taken from fingerprint scans and facial recognition technology, will replace travel documents and other physical items, such as passports.
news.sky.com