On the go: Top gear in the year 2031

When you look back 20 years to the era of brick-like mobile phones, film-based cameras and – scary as it is – no Facebook, it's easy to see how far technology has come. But how far will it go? In the final installment of our "on the go" series we've cast our minds two decades into the future to take a look at some of the most promising mobile technologies that are likely to reach maturity by the year 2031, delivering connectivity, convenience and portability on a science fiction scale.

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