DSDN 112: Keyboards?

I was given feedback in the interim about my choice of QWERTY Keyboard, and whether it would be the most suitable option for one handed typing, on such a small screen. I have been looking into some other input/typing options and found these:


Datahand: 
This keyboard as a 5 buttons per finger, with each button representing a letter. I could use something similar (a keyboard with 5 letters per finger) on my interface. This method of input could also be difficult to implement as it would require two hands for input, unless I had some way of switching between two keyboards.

Datahand keyboard.






Layout of the datahand letters for one hand.







FrogPad:
This key board was designed for one handed use,which would be ideal for my project. the keyboard is made up of a total of 20 keys, 15 of which are actual; letters, and 5 extra keys along the bottom (SHIFT, SYMBOL etc). Each key has two letters and two symbols, which can be selected by using the symbol and shift keys.




A more modern take on the FrogPad Keyboard.





The original FrogPad Keyboard, clearly showing each of the buttons.






Steam Big Picture Keyboard:
The Steam big picture key board is designed for use with a game console controller. It splits the letters into groups of four. The user select which group of letters they need, and then selected the specific letter with the use of the four main buttons on the game controller. This could be an interesting way of typing in locations on my navigation system, as it wouldn't take up much space, and could easily be used with one hand.

You select which four letters you want with the toggle/stick (as seen in the below image), and then use the four buttons on the controller to select the letter you want.