The study found the wireless network could measure breathing within 0.4 to 0.2 breaths per minute, an insignificant error rate given that most breathing monitors round to the nearest breath per minute, he says.

ENGADGET: Researchers use wireless network to monitor breathing, could save lives

The government has advised shop owners to round out prices to the nearest nickel (5p) for cash transactions.

BBC: Canada stops distribution of penny coin

They discovered that many people round up their transactions to the nearest whole number for speed and convenience.

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Watching the crowds surge round Mr Edwards, one local party leader said it was the nearest thing he had seen in politics to Elvis.

ECONOMIST: John Kerry's running-mate