I’m sitting in the Seoul South Korea Airport as I type this.
Most airports, the dozen I have been through in the last two months, photograph you and take all fingerprints. They check that with their database and cross reference to your passport file.
No one gets through without the procedure.
I’m surprised the don’t take a DNA sample.
They did; when the fingerprinting was taking place.
“I’m surprised the don’t take a DNA sample.”
So that’s what TSA was doing