There are assistive typing devices that use complex models to predict characters: https://en.wikipedia.org/wiki/Dasher_(software) https://en.wikipedia.org/wiki/

There are assistive typing devices that use complex models to predict characters: https://en.wikipedia.org/wiki/Dasher_(software) https://en.wikipedia.org/wiki/Dasher_(software) The downside is that with a powerful enough model you could replace the patient with a coinflip and have a hard time telling the difference.