That's very interesting, Lannis. Here we have a multitude of shop loyalty cards, the means by which they gather data on your shopping preferences. However, the 'discounts' for using them (aka pay inflated prices if you don't) are very significant in some of our bigger supermarkets and therefore well worth having. I don't really care if they know what beer I like.

I've also, belatedly, switched to pay at the pump with a card. It's much faster than queuing. Having said that the self-service tills at supermarkets are starting to become unpopular because they are, often, unreliable and require a shop employee to clear your purchase. I always smile when it requires a shop employee to give me clearance to buy zero alcohol beer!! One day, I shall ask about that.