Caselli's scanning technology became popular again in the late nineteenth century and early twentieth century. English physicist and inventor Shelford Bidwell constructed the phototelegraph in 1881 that scanned and transmitted images using selenium photocells. German physicist Arthur Korn in the early 1900s developed a practical mechanical television system, known as the Bildtelegraph, that transmitted photographs and fingerprints of criminals. French photographer and engineer Édouard Belin invented in the early 1900s a phototelegraphic apparatus called the Bélinographe (télestéréographe), which was a system for receiving photographs over telephone wires and used by newspapers. His system was used beginning in 1928 by French radio stations to broadcast by airwaves photographs that were scanned. Richard H. Ranger, engineer of Radio Corporation of America, invented in 1923 the wireless photoradiogram radio facsimile, the forerunner of the twentieth century FAX machines, that could scan and send pictures and signed documents across the Atlantic Ocean between England and the United States. Herbert E. Ives, television engineer of AT&T, designed a system in 1927 that transmitted live scanned images of a person's face using electronic "electric eyes" mounted in a cabinet, forerunner of the movable studio television camera and the hand-held camcorder.