Swallow a pill and let it take pictures of your gut. Sounds great, doesn't it? Well, the PillCam has been a leader in this medical device industry. However, it's not the only company making endoscopic capsules. RF System has the Sayaka and Olympus has the EndoCapsule. I think it would be so much fun to engineer these tiny devices that can take pictures inside your body. The next generation of these tiny probes may even take biopsies!