It is interesting, counterfeiters can see the "T" in "Treasurer" on the $20 dollar bill just fine.
Being able to photograph on this scale, internal to the body, will be followed by a surge in medical analysis. However, the delivery of the camera might not be so comfortable.
This stuff could really help those people who are trying to do Macro photography of all types of things. I am definitely going to look into this stuff, it looks like it can open a whole new world of surface analysis and the micro level.