So you have just built a wrapper around https://passportreader.app/, which itself is reading NFC enabled ID/passports from specific countries. The coverage map is here: https://passportreader.app/coverage.

Might be good to know that even in the US this approach would only work for ~50% of people, since a lot of people don't have passports. In most countries this does not work at all, since they don't issue NFC enabled ID/passports.

The "how it works" page for that website says that the ID data is "digitally signed by the issuing government". But there doesn't seem to be anything in the docs about how to get or verify that signature. So it seems like they are just asking users to trust them to do the verification.