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If this were The Matrix, you wouldn't want a robot climbing into your head. Now imagine if instead of trying to suck the life out of you, they were robotic life-savers.

The team that created Apple's Face ID is on the verge of a game-changing medical development – robots smaller than a fingernail injected into the skull to deliver drugs directly to the brain, with no overspill to the rest of the body.

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Source Fool.com