A capsule endoscopy system is a diagnostic tool that uses a tiny, swallowed pill-sized camera to capture thousands of images of the digestive tract as it moves through the body. The system consists of the capsule itself, a wireless transmitter, a data recorder worn by the patient, and a computer for reviewing the images. The recorder collects images transmitted wirelessly from the capsule, and a doctor later reviews the resulting video to diagnose conditions like bleeding, ulcers, or tumors.