IKeyboard, A Slap-On Rubber Keyboard for iPad
Despite writing over 1,200 words in his product’s description, inventor Cliff Thier doesn’t once describe how it actually works. No matter. With a little sleuthing, we see that his iKeyboard is quite clever indeed.
Cliff’s iKeyboard is an overlay for the iPad’s own soft keyboard. Instead of carrying a bulky external keyboard, you can just slap [...]
Source: http://www.wired.com/gadgetlab/2011/05/ikeyboard-a-slap-on-rubber-keyboard-for-ipad/