Instant gratification, the kind you get from a selfie, used to come on a thin sheet of iron.
A tintype photo was novel and relatively immediate in the late 19th century. Have your picture made then wait while the photographer developed the image. After a few minutes, you had a photo to share.
Users of the TinType app by Hipstamatic have been bringing that distinctive and, at times, haunting aesthetic to portraits and selfies since 2012.