It may have taken a few paragraphs to explain all this, but in use the system is remarkably intuitive. If I have a gripe it is that I had to stop myself from prodding the main screen to get it to do things for me.
I didn’t have any trouble with the InteractPad failing to respond to my taps. This is because it gives visual, aural and tactile feedback. Aural feedback comes in the shape of plinks and plonks, tactile from a teeny vibration when you tap an icon.
Switch to the vibrate profile and you only get the vibration, use the silent profile and both effects are turned off. Even then you have the visual feedback. When you tap an icon and your tap is registered there is some sort of change. Arrows get huge for a millisecond, buttons animate briefly, and so on.
The KF600 has a flat number pad. Fortunately it is rather more usable than many. Partly this is because of the styling of the keys: the two-tone grid makes it easy to visually identify the key areas you want to hit. And partly it is because the keys press in nicely and if you are in a relatively noise-free space you can even hear a very quiet mechanical click as they do so.
All in all, then, for a quirkily designed handset I found the KF600 remarkably easy to live with.
As a visual treat there are eight different animated themes, five of which are based on Keith Haring designs. Both the main screen and the InteractPad are altered when you choose a theme, giving quite a detailed makeover to the handset.
For all its touchy trickery and dual front screens this is a pretty small mobile, too, at 101mm tall, 51mm wide and 14mm thick. It weighs a perfectly acceptable 107g.