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BrailleTouch: Touchscreen Typing App for the Visually Impaired

February 22nd, 2012 Stanley Darma Rehab

Touchscreens lack buttons, making it very difficult for blind or visually impaired people to use smartphones and tablets. That is what Mario Romero, postdoctoral fellow at Georgia Tech, probably thought when he came up with the idea to develop BrailleTouch, an app that allows folks to type on the touchscreen without seeing it at all.

The application works by putting the 6 dots of a braille character on the screen in landscape mode with 3 on each side. Three fingers from each hand then press in the appropriate patterns to create the desired characters. There is audio feedback to confirm the correct input and the screen flips regardless of orientation so a user does not have to worry about the phone being “upside-down.”

The researchers at Georgia Tech have tested their app and have concluded that users can reach up to 32 words per minute with 92 percent accuracy using their prototype on an iPhone.  The app can also help people learn the Braille alphabet. It also might come in handy to the sighted when you want to take a note without being noticed by other people.

The video below demonstrates how the BrailleTouch works:

Press release: Georgia Tech Develops Braille-like Texting App

Stanley Darma

Stanley is an MD and PhD candidate at the Academic Medical Center Amsterdam, the Netherlands. His research field is in ophthalmology and optical coherence tomography, making amazing pictures of and performing precise measurements in the human retina everyday.

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