If you have internet connection (and reading this Blog it is kinda obvious that you do), you have seen this nice thing, Art Lebedev Optimus Maximus. If you haven't, you have been living under a rock.
Art Lebedev took things one step further in their new concept, Optimus Tactus. Take look at this, and shed a tear of joy.
This is extremely nice, but typing will be downright impossible. Feeling of keys under fingertips is an absolute must. Having this as secondary keyboard (color picker for Photoshop or something) could be nice. But i do not dispute the fact that this is very very fancy geek product.