MIT's wearable Human Operator looks like dragon scales along the forearm. AI vision tracks the task and sends precisely timed electrical signals to the hand muscles, making the fingers move without the user deciding to move them.

For someone 1.5 years after a stroke, whose recovery has stalled, repetition is the point. The device could provide more training hours in a week than a clinic can provide in a month.

It does not download a skill. It guides movement rather than transferring ability, and it is still unknown whether this creates lasting motor memory.