Mr Ferguson said a "number of potential improvements" would give a better connection on the route between Long Ashton and Temple Meads railway station.

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However, the routes often have superficial differences, and Dash's slow cellular connection can require more time before starting the route than competitive devices.

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So every time the tag is read, a real-time connection to that database is needed to work out how to route the bag.

ECONOMIST: REPORTS

Even with his wimpy DSL connection, pages are rendered quickly enough once the website's servers (and all the other computers along the route, plus those used to host adverts, graphics and miscellaneous layout bits) start giving his browser's request some attention.

ECONOMIST: The faster the internet becomes, the slower it loads pages