Your brain for sale? The new frontier of neural data

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Your browsing history, your location, your political preferences. For years, tech companies have found ways to turn personal data into profit. Now, a new and far more intimate frontier is opening: the electrical signals produced by your brain.

This is not science fiction. Nor is it about brain implants for paralysed patients or experimental medical procedures. A fast-growing consumer market of non-invasive neurotechnology – wearable headsets, brain activity-reading headbands...