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Royal Mail has tacked barcodes alongside the Queen’s frilled portrait to the right to allow workers to scan packages.
Customers can also use the stamps to create a digital footprint with the firm’s official app.
Post Offices and shops have now started selling the new versions, and in four months, they will become the only admissible kind.
The standard issue stamps of decades gone will cease to be valid by January 31, 2023.
