BARCELONA—Mobile World Congress isn’t just about the latest phones and wearables. The halls of the Fira Gran Via convention center were also packed with plenty of bizarre tech. I combed the show floor looking not only for the best gadgets, but also the strangest—and the convention delivered. From AI devices that analyze your scalp to dancing humanoids and eerily realistic dinosaur robots, here’s the weirdest tech I saw at the show.
HairCoSys HeyCheckScalp
(Credit: Eric…

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