Seeing Images with Touch and Sound

A force-feedback joystick that vibrates to simulate textures could help the visually impaired interpret the image on a computer screen.  The assistive technology system requires that the user hold the joystick to move a cursor on the computer screen. As the cursor moves over different images, the joystick will vibrate to simulate different textures in conjunction with the system’s audible cues.

http://www.purdue.edu/newsroom/releases/2017/Q1/people-with-visual-impairments-could-identify-scientific-images-on-a-computer-screen-through-stem-designed-assistive-technology.html