Maybe I'll check if he has any points saved up with those supermarket loyalty programs.

Heh. Those "loyalty" programs are another way they launder their reporting as people give them their fiat identities on registration and then those companies report the customer outlays to the state (where their ultimate loyalty lies) ; thus, the state has more info to cross reference.

I think when I bought my harmonica from them I made up a name, Claude Shannon or similar ;-)