In simple terms, a screen reader system speaks all the information in a human voice which comes on the screen as well as the text which is typed on the keyboard. A Braille display makes the same information appear on a Braille line which blind people can read with their fingers. Braille technology is an assistive technology which allows blind or visually impaired people to do common tasks such as writing, browsing the Internet, typing in Braille and printing in text, engaging in chat, downloading files, music, using electronic mail and reading documents. As part of its mission to make the world’s information universally accessible, with the hope of expanding braille literacy and exposure among blind and low vision people, Google is bringing a virtual braille keyboard to android. TalkBack braille keyboard is a new virtual braille keyboard to be integrated directly into Android. It’s a fast, convenient way to type on your phone without any additional hardware, whether you’re posting on social media, responding to a text, or writing a brief email. It uses a standard ‘6-key’ layout that the visually impaired users will be familiar with since it is similar to a physical braille keyboard which when tapped, make any letter or symbol. To type an “A” you would press dot 1 and to type a “B,” dots 1 and 2 together.

To make use of it, users need to turn the display away from them and hold the device in a landscape orientation, with the hands gripping the short end of the phone. The right hand must hold the end with the USB port. A complete tutorial have been provided on the support page (https://support.google.com/accessibility/android/answer/9728765) on how to turn on/access & use the feature on android.
The Talkback braille keyboard is rolling out to Android devices running version 5.0 or later, starting today. It works across all apps on Android devices, supports braille grade 1 and grade 2 and for now, is available in English only.

Source:https://spot.tecno.com/ng/forum.php?mod=viewthread&tid=82147
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