Showing Boarding Card in airport shops
When passengers buy something from WH Smiths or Boots in MAN (after going through security) they are always asked to show their boarding cards - why?
On one occassion the sales assistant made the person being served go and get the boarding card from their companion who was somewhre else in the shop, causing quite a delay.
I have asked the reason why a few times in the shops but have got different answers.
So - whats the real reason and what happens if you refuse?
I don't know about the other shops in there, I haven't bought anything from them.