Doesn't that fall under vigilantism? Publishing fingerprints might get you in trouble. In most countries you are forbidden to take photos in a private setting

Doesn't that fall under vigilantism? Publishing fingerprints might get you in trouble. In most countries you are forbidden to take photos in a private setting without permission, and in some even in public. wvenable's comment is on point. Just as public websites aren't public domain, publishing information delivered on request might not be legal.