Those face scans are matching to the biometrics you’ve already provided to your own government when you obtained your modern passport.
replyMy passport currently has a broken chip and I’ve been traveling extensively, so I need to go into the border guard queue every time I enter. It’s very annoying. And they take the face scan each time and their computer compares it to past images of my entry.
Same in the USA I believe.
replyYou can actually opt out of it. The guards will be a bit miffed but it is your right. In the EU the face scans are mandatory and the data will be retained.
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