In criminal cases, head, face, and body shapes had two purposes which were identifying past criminals and predicting future criminals. In nineteenth century practice, mapping the body and head had greater potential within phrenology, which was detecting criminal types. Throughout the late nineteenth century, the typing of every kind of physical trait was widely popular, often going between identifying past criminals and predicting future criminals (Faigman, 2008). Of course, Gall's theory of phrenology faded due to limitations. As a result, phrenology failed in predicting the internal nature of a person from the external shape of the skull (Faigman, 2008). Unfortunately, however, it was also misused by making judgments of individuals based on their skull