I have been using computers since years and have developed a good typing speed on the QWERTY keyboard (~100wpm) without even looking at it (I’m not looking at it even at the very moment – in fact, I haven’t looked at it while writing the whole blog post). Then I thought of the idea of removing the markings on the keyboard altogether. The space bar has no markings, but you’re still able to use it. Why? Because you know it’s a space. There’s nothing on the trackpad, but you can still use it (think of Apple publishing all the multi-touch gestures on the trackpad, how untidy it would be). The bumps on the F & J keys on your keyboard are enough to guide your fingers on the whole keyboard. Check the image below (click to enlarge - photoshopped – credits).
I added another bump on the number key 6 in the image, to help guide the fingers in the number area (might need more research, for its repositioning or even if there’s no need to add it). Since I’m a programmer, I frequently use the special character keys, thus the removal of them too – I just think and my fingers press that key. But I still do not use the function keys much, thus not blacking them out.
Think of people asking you for your laptop and you don’t want to give it and if they’re not good at typing like you are, they would not be able to use it. Another point is that there would be no need for back-lit keyboards. Think of a thinner MacBook Air.
I hope this comes into practice some day, and no, I’m not going to patent the idea (even if I’m not allowed to patent this), it just hampers development.