The wearer says, "O.K., Glass" and glass leaps into action, performing most of the smartphone functions like check e-mails, take photos and videos, provide turn-by-turn navigation, and make and receive phone calls. Welcome to Smartphone 2.0.

Technology pundits called Google Glass the best thing that happened to augmented reality since the iPhone. What is the augmented reality? In this case, we can say it's the interface between the wearable computing and the Internet of Things (IoT).

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