The iPhone keyboard (or the lack thereof) has been a polarizing point for many, and while we've seen a workaround or two in our day, we've yet to see a solution to the lack of tactility as beautifully simple as this. 4iThumbs is a screen overlay that adds minuscule bumps on your iPhone display -- bumps that correspond to where the keys are when using the vertical keyboard. 'Course, these things are apt to bug you when using the horizontal keyboar
