Lance Corporal Craig Lundberg, 24, can read words, make out shapes and walk without assistance thanks to a device developed in the United States which could revolutionize life for other blind people.

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It converts images into electrical pulses which are sent to the tongue, where they cause a tingling sensation.

The different strength of the tingles can be interpreted so the user can mentally visualise their surroundings and navigate around objects.

(via discovery)