Earlier this week some great looking macro photos take of various object circulated around the internet. The man responsible for these photos, Daniel Forsythe, has released instructions for all of you that are interested in doing the same thing.
This hardware modification isn't for the feint of heart. It involves taking apart your iPhone, removing the camera, scrapping out some glue that holds the camera lens in place, and then re-focusing the camera by rotating the lens.
While this does take a bit of delicacy and patience the results are quite good and extremely useful if you use your iPhone primarily for grabbing shots of bar codes or notes or anything else that you need some close-up detail.