How can I embed custom keyboard buttons inside the iOS Default keyboard, like the "UP" app by Jawbone has done in the picture below.
I am looking to embed an "@" button identically to how the app has done it (I don't need the # button). I have found ways to add buttons above the keyboard or change the keyboard style (the email style includes the @ button but adds unneccessary ones and makes the space button to small) but no way to seamlessly integrate it like above.
That is not a custom button, that is the
keyboardTypeUIKeyboardTypeTwitter.