The linked article features a digital prototype in creation at Stanford University which allows you set the focus of an image after you've completed the capture. Unfortunately the process has a massive effect on the quality of the image, reducing it by a massive 16mp.
However, given the state of play of the digital world I'm guessing it won't be too long before a solution presents itself. And when that day comes... just imagine the possibilities.
Okay, enough from me. I'm going back to bed because this flu is evil.