Barcoded stamp

Beginning in 2022, Great Britain converted to barcoded stamps.

Previous designs were again used with an additional Datamatrix code alongside. This has a unique identification for the stamp. When scanned during mail processing, the stamp is deleted from the database and can no longer be used. So this is similar to QR code stamps to prevent re-use and forgery.

While stamps back to the beginning of decimal currency have been valid to this day, only old commemoratives will be usable. A redemption program for definitives was started, ending in January 2023.  File:GB 2nd large barcode A.webp|2nd class "large" value File:England barcoded 2nd A.webp|2nd class England regional with barcode 

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