A New Device Can Hear Your Thoughts

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In early April, MIT research assistant Arnav Kapur, 24, uploaded a short video on YouTube. The clip showed him moving around campus in various settings wearing a white plastic contraption wrapped around the right side of his face. As he walked by rows of bikes parked next to mounds of melting snow, his lips were closed while his inner thoughts flashed as words on the screen. “Time?” it read. A male voice responded, “10:35 a.m.” In the next scene, Kapur was shopping in a bodega. The prices of the things he tossed into his shopping…

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