HTML Braille patterns are very useful if you're preparing webpages for visually challenged people. These Unicode symbols can be used to type in Braille and display the resultant text on a website. Following table gives you these symbols as well as codes for displaying them on your webpage.
In the above list, if you see an empty character —it means no Unicode has yet been defined for that code. In case you see a gibberish box instead proper character, it means your computer does not have appropriate glyph to display that character.