Sure, the iPhone is "sexy" in gadget terms. 
But will it make you feel like Aston Kutcher or Catherine Zeta-Jones (whichever lights your tiki) is nibbling on your neck?
That's the promise of some British engineering and design students, who were charged with devising mobile phones that project intimacy and sensuality. Designs include the Aware, a combination phone/pendant that sends a tingle down your back if someone in your address book is nearby. Another encourages people to make music together. Sez one of the students:
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