A few years back I took a trip from Australia to Europe. I flew with China Southern and I had a stop over in Guangzhou. I am an Australian UK dual national.
Out bound trip was fine, but on my way back, while I was waiting in the terminal at Guangzhou for my final leg, a Chinese person who I assumed was some kind of airport/airline employee (by the way they were dressed) approached me and asked to see my passports (plural). They then used a smart phone to photograph both of the detail pages.
I thought it was a bit odd at the time, but just went along with it because they seemed legit.
Why would this happen? Has anyone else experienced this?
It may have something to do with the passport I used to pass through Chinese transit, but I'm pretty sure I used my Australian passport at Guangzhou both times I was there.
Two more questions, possibly not answerable. How did they find me? The person seemed to know who I was when they approached me, i.e. they weren't randomly asking people if they were dual nationals. How did they know I had two passports (assuming I used only my Australian passport in China)?
Note: This did happen about 3 years ago, so my memory might be a little sketchy on the exact details.