Going to the shops has never been more complicated. It was bad enough in the past. I have been known to complete a full weeks shopping at Aldi, put it all through the checkout, only to discover that: somewhere in the child haunted madness of my journey out of the house, I have neglected to pick up my wallet. The shame that I felt having to repack everything whilst offering groveling apologies to angry shoppers queuing behind me still causes me to cringe to this day. Then a fu