It's not only about elderly. Imagine you have a stroke, or your hands are full of blood, or you fall and brake your hands ...then you cannot use your touch scr

It's not only about elderly. Imagine you have a stroke, or your hands are full of blood, or you fall and brake your hands ...then you cannot use your touch screen smartphone and/or speak comprehensible words! In such emergency situations a text-to-speech would save life's. You may be able to press a physical button or the G-sensor detects the accident and reacts automatically.