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We quite enjoy watching McDonald & Dodds - an ITV crime series set in Bath with episodes designed for a two hour slot - but we did have an issue with the latest episode

The barcode on a bottle of fizzy wine ain't going to tell you where and when it was bought. There is retail technology based on RFID that could do that, but your standard EAN-13 (a) doesn't have enough data content, and (b) can't be updated

(I don't know of anywhere that actually uses the RFID tech for groceries, even now)