Braille Pattern Based Mobile Operating System(FirefoxOs)for Blind and Visually Impaired People
Braille Pattern is the language of Blind peopel, they can read and write the alphabets through this braille pattern, here 9 dot braille patterns is used to draw the braille patter(include numbers). By drawing the patterns in the display they can access all the native applications of the FirefoxOS.
Origin of The Source is https://9dotpatternlock.codeplex.com/ It's Under GPLv2 License.