While WiFi-based systems only detect location within two metres or so, Navisens claims to pinpoint a person's whereabouts within less than one metre.

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Not so easy to see that a person might value a job at less than the minimum wage or that sorrow is borne differently by each person.

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Some will test umpires, so you don't want to put a fairly new person up there with less experience.

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Modern games sometimes span 10, 20 or 30 hours, and so other, less involved leisure activities might start to take hold, even if the person in question has been a lifelong gamer.

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