Tesco has stopped accepting cash at cafes in 40 stores across the UK forcing customers to pay by card at self-service machines. The move has been slammed as “a step backwards” for some vulnerable people who may wants to order with a person, and not a screen. Many retailers and supermarkets are turning to a more digital strategy in order to cut costs. Cafes are refusing to take cash as a cost cutting measure because it is more expensive for them to handle. Tesco has explained the overhaul has boosted the customer experience and the changes have been well-received, but critics said it was “bonke…