If someone is writing a book, you can activate the microphone and they can say the story instead of getting all tired by typing it
Say your story into the mic and the cpu will type it for you
This is already a feature. It's called dictation and is under the Accessibility settings.
Vinit Gambhir commented
Yes, they should provide mike
Fei Zheng commented
Pls do this idea i'm not good at typing