Keyboard Development on Windows Phone 7

Question

How can i develop a customized keyboard on Windows Phone 7?

Answer 1

You can't create a custom keyboard. Check out this question asked earlier:

Creating a custom InputScope for Windows Phone 7

Answer 2

Well, you could create a custom keyboard, it would just be super complicated.

1. create a popup that contains buttons that do what you want that mimics the keyboard
2. add tap+focus listeners everywhere to handle making your popup visible and invisible like the keyboard
3. spent a year debugging all the little issues that come up

it's possible, but the amount of work required to do it would probably not be worth the effort.