In brief, Android 1.6 includes a built-in screenreader and text-to-speech (TTS) engine which make it possible to use most Android applications, as well as all of Android's default UI, when not looking at the screen.
Android-powered devices with Android 1.6 and future software versions will include the following accessibility enhancements:
Text-to-Speech (TTS) is now bundled with the Android platform. The platform comes with voices for English (U.S. and U.K.), French, Italian, Spanish and German.
A standardized Text To Speech API is part of the Android SDK, and this enables developers to create high-quality talking applications.
Starting with Android 1.6, the Android platform includes a set of easy to use accessibility APIs that make it possible to create accessibility aids such as screenreaders for the blind.