The Kodak produced circular snapshots, two and a half inches in diameter. The Kodak was sold already loaded with enough paper-based roll film to take one hundred photographs. After the film had been exposed, the entire camera was returned to the factory for the film to be developed and printed. The camera, reloaded with fresh film, was then returned to its owner, together with a set of prints. To sum up the Kodak system, Eastman devised the brilliantly simple sales slogan: ‘You press the button, we do the rest.’
The idea was resurrected many years later with the "development" of the disposable film camera. Link -via the Presurfer