Lego unveils tech-filled Smart Bricks - to play experts' unease

Lego says its new tech-enabled products are its "most revolutionary innovation" since it launched its mini-figurines in 1978.
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LEGO's smart brick brings sound and color to play

A yellow LEGO duck made of LEGO blocks had a black torso with a transparent material attached. When the duck was shaken 2-3 ...