Image recognition connects 19th and 21st century communications

The U.K.'s Royal Mail is offering a special stamp that can be recognized by a phone app to play unique content. The Great British Railways "intelligent stamp" has a picture of a classic steam engine. When an Android or iPhone app created by Junaio recognizes the stamp via the phone's camera, a video of Bernard Cribbins reading W.H. Auden’s poem The Night Mail plays on the phone.