Opticon

An early assistive technology device developed by Dr. James Bliss in the 1960s that converts printed text into a tactile vibrating pattern that can be read with the fingertip. The Opticon uses a small camera to scan printed characters and reproduces them as patterns of vibrating pins on a refreshable tactile array, allowing blind users to read printed material at speeds of up to 60 words per minute. Though largely superseded by optical character recognition (OCR) with screen readers and refreshable Braille displays, the Opticon was a pioneering example of sensory substitution technology and demonstrated that meaningful text reading was possible through tactile arrays — a principle that continues to inform modern refreshable display research.