In a rather intricate mod, Russian developer timurmurmur (also known as 666661) managed to fit a camera to the back of his PSP. The camera not only fits inside the PSP without any protrusions, but is small and inconspicuous enough not to be noticed by those who aren't looking - hence "Invisible PSP Camera mod."

According to timurmurmur's email, the camera he used is a Go!Cam. And all he said was a simple "You want to play UMDs and use internal Go!Cam at the same time?"

The video doesn't show exactly how the device is intertwined with the UMD although the description suggests that unlike the Chotto Shotto mod on the PSP Phat, one can still use the drive even after the camera is installed, but we'll have to wait for more info to confirm that.

At any rate, the rather covert camera is still a neat trick: