This is a barrier of a higher order, and is enough to make the micro-mechanical switch dramatically more reliable in extreme conditions.

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This protrusion (which is removeable) provides access to a multi-function button, volume controls, power switch and micro-USB port for charging.

ENGADGET

Arrogant micro-managers rarely flourish following a switch, experts say.

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It just wouldn't be much consolation to those who'd been hoping for a switch to a standard like micro-USB -- or, for that matter, to long-time iPhone owners who may have to give up or convert legions of accessories.

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But the optical switch takes the flickers of lights flashing by and, with the use of its micro-mirrors, redirects them from one optical fibre to another.

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