This multi-line braille display is an unique device from the Orbit Research company. Unlike braille displays with one line of braille cells this device offers refreshable touchpad of raised dots, array of 2400 refreshing pins. Dots can even refresh in different heights, which gives an additional feature and possibility of distinguishing different areas oor lines of the picture. More information about this device are available on the Graphiti Orbit Research webpage.
Watch a short video presentation of the device.
Graphiti was also presented on the conference Tactile Reading 2021 by Venkatesh Chari. You can see the presentation in this Graphiti presentation at Tactile Reading 2021.