your passport contains copies of your fingerprint + facial info already, and they can read that off via NFC.
(it has an authentication mechanism though)
Discussion
Where do they get your fingerprint? I don’t remember being printed…
It depends on the country, but many countries now require fingerprints for getting a passport
Dear God!
If you felt like that wasn't enough, the latest ePassport specifications support iris scans.
(They can also be turned into a Bitcoin HWW if you try hard enough)
It is disgusting. They didn’t even ask for our passports upon reentering the US, until we tried to enter the baggage carousel. They will not let you pass through the glass doors/gate until you remove your sunglasses and hat, for their handy facial recog entrapment.
Usually they just match it against your passport photo. And that probably has been shoved in enough databases, so it’s over by then.
All those countries that you have on arrival visas are because of the personal detailed information shared between the countries. Everything that is filled in a visa request form.
I’ve always wondered if my iris scan would just reveal a QR code to my lightning address. sparepicolo55@walletofsatoshi.com , turns out I’m more machine than artist some days.