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Supermarkets are using loyalty cards to amass vast amounts of detailed information on customers. Retailers can use this data to push special discounts or offers on customers.
We visit an Aldi Shop & Go and Tesco store where people are being forced to hand over vast amounts of data to access food and deals.
Customers should be able to freely choose whether they want to hand over their data to big companies, rather than feel pressured by the promise of huge savings on their shopping bills.
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