How the Sony Smartwatch Works

Author's Note

As a child in the 1960s, I was an avid reader of the comic strip "Dick Tracy," in which the intrepid detective and his colleagues -- always on the speculative cutting-edge of 20th century technology -- upgraded from their two-way wrist radios to wearing tiny two-way wrist TV sets. Back then, such gadgetry seemed like an unlikely dream. It was kind of unsettling when LG Electronics unveiled a wristwatch cell phone back in 2009 that actually had a camera and screen for video chatting. I notice, though, that the technology so far doesn't seem to have caught on in the marketplace, perhaps because most of us don't have anything as momentous to communicate as Tracy and his crime-stopping colleague Sam Ketchum usually did.

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