Its nothing sinister, its there to act as proff that we are activly seeking ID from customers that do not look 25 ( or 16 for fuel ). If the store were to be done for failing a test purchase by the trading standards or police then we have evidence to prove we ask for it when requiired. It aslo used to show which staff members ask for id and which dont ask so often or maybe not at all.
Out of interest, what do you do if someone under 16 (or suspected) has filled up a can of fuel?


If you paid by card then the reciept has all but your last 4 digsts starred out.