“It grossly disproportionate for retailers, especially food retailers, to be using that technology,” he [Tom Sulston, the head of policy at Digital Rights Watch] said.

“Supermarkets are pretty safe places where ordinary people need to go in order to feed themselves and we shouldn’t have to pay with our privacy to do that.”

Pretty much sums it up. Fulfilling basic needs like food shouldn’t be a sum game of choices like “Will I be added to a database?” Or going hungry.

I’ll definitely be avoiding stores that decide to implement this. I recognise that’s not going to be an easy decision for some people and many just won’t care.