Rollerphone (Alexey Chugunnikov via Yanko Design)

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No, the Rollerphone is not a phone/roller-skate hybrid (though part of us wishes it was). Rather it's a wristband concept phone, albeit one with some transformer-like tricks up its sleeve. At first glance it looks more like a watch that projects the time, but closer inspection reveals a retractable transparent screen that functions as a phone. Ergonomic customisation options mean the screen unfurls only to your fingertips, ensuring a perfect distance between speaker and mouthpiece. Apparently it's not necessary to flick your wrist spider-man style to unfurl the screen, but we'd probably do that anyway if we owned this phone. You know, just to be cool.

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