Other research along these lines are "plotting" visual signals onto tongues. Here's an interesting article from 2009 talking about it: https://www.scientificam

Other research along these lines are "plotting" visual signals onto tongues. Here's an interesting article from 2009 talking about it: https://www.scientificamerican.com/article/device-lets-blind-see-with-tongues/ https://www.scientificamerican.com/article/device-lets-blind... "From the CPU, the signals are sent to the tongue via a "lollipop," an electrode array about nine square centimeters that sits directly on the tongue. Each electrode corresponds to a set of pixels. White pixels yield a strong electrical pulse, whereas black pixels translate into no signal. Densely packed nerves at the tongue surface receive the incoming electrical signals, which feel a little like Pop Rocks or champagne bubbles to the user." It's been available in Europe since 2013, and the US FDA apparently approved the device in 2015: https://www.medicaldaily.com/fda-approve-brainport-device-which-allows-blind-see-tongue-re-teaching-brain-overcome-339328 https://www.medicaldaily.com/fda-approve-brainport-device-wh...