Disposable endoscopic camera is the size of a grain of salt

Disposable endoscopic camera is the size of a grain of salt: "Tiny video cameras mounted on the end of long thin fiber optic cables, commonly known as endoscopes, have proven invaluable to doctors and researchers wishing to peer inside the human body. Endoscopes can be rather pricey, however, and like anything else that gets put inside peoples' bodies, need to be sanitized after each use."