Brain–computer interfaces, once used exclusively for clinical research, are now under development at several wealthy startups and a major tech company, and rudimentary versions are already popping up in online stores.
Why it matters: If users unlock the information inside their heads and give companies and governments access, they’re inviting privacy risks far greater than today’s worries over social media data, experts say — and raising the specter of discrimination based on what goes on inside a person’s head.
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