From sci-fi to reality: Brain-computer interfaces are rapidly moving from experimental prototypes to early commercial medical tools that allow people with paralysis or neurological conditions to control computers and devices using only their thoughts. Advances from companies like Neuralink note that clinical trials are expanding and regulatory approvals are starting to open the door to real-world use. However, technology remains limited and invasive, with safety, ethical and privacy concerns. Bloomberg has the full story. 

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