A pill camera is a piece of equipment used for a procedure known as capsule endoscopy. It was developed in the late 20th century and was approved for use by the FDA in 2001. The camera is about 1 inch long and one-half inch in diameter, with rounded edges making it shaped like a drug capsule (although slightly larger). It is comprised of a camera, flash, plastic capsule, and transmitter (at present, usually Bluetooth (TM)). It is small enough to be swallowed.