Motorola is forging ahead with the concept of modular,

3D Printing
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Motorola is forging ahead with the concept of modular, customizable smartphones first put forth by designer Dave Hakkens with his Phonebloks concept. The company said recently that it was officially pursuing such an idea with Project Ara, and Motorola is already putting together important partnerships to make it happen…
http://hothardware.com/News/3D-Systems-And-Motorola-Team-Up-To-Deliver-Modular-Customizable-3D-Printed-Smartphones/

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Pretty exciting stuff for DDD here and the 3D Printing community in general.