I have a question and concern on the passport scanner issue.
It happened at South Korea airport.
Before I went to luggage inspection, I have to scan the passport with airport staff and when my passport was being scanned, there was warning sound or weird sound from the passport reader machine. It was a different sound from other people before me. And staff just handed a passport to me normally. And then I went to luggage inspection normally.
My question: does this situation happen normally, and there is nothing on my passport right?