Optacon
/ˈɒptək(ə)n/ /ˈɒptəkɒn/noun
A device for enabling a blind person to recognize printed characters by touch, the fingertip being placed on an array of numerous tiny rods certain of which vibrate in accordance with the pattern of light from the characters.
Origin
1970s; earliest use found in The New York Times. From op- + ta- + con-.