My full-time digital photography expert (thanks Mom!) notes that DPReview has published a review of the Casio Exlim EX-750.  And that a similarly-featured 5Mpx model is now available that’s 40% thinner.  How do they do that?!  At this rate in a few years we’ll have cameras that are the thickness of a credit card with the whole back acting as a display.

Reminds me of SD cards which (though growing in capacity) are unlikely to get any smaller because of the limits of human fingers to manipulate anything tinier.