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Your tech devices want to read your brain. What could go wrong? Dalvin Brown Ramses Alcaide has spent over a decade thinking about thinking. As a PhD student at the University of Michigan in 2015, he developed a brain-computer interface that would allow people to control software and physical objects with their thoughts. Today, that interface is behind plans by a Boston-based start-up, Neurable, to begin shipping a set of brain-sensing headphones to let you know when you’re poised for peak productivity. Using your thoughts to make things happen in the real world was once a thing of science fiction. Now, it’s moving into reality, and Neurable’s interface is just one of the products companies are trying to develop that would usher in a consumer revolution in electronics.