Since the beginning of time humans have claimed to be able to communicate with the world of spirit. However, it would not be until the apogee of the movement of Spiritualist which it would start to claim to make for an occurrence day labourer. This particular movement was rested by Kate and Maggie Fox, who established a manner of communicating with a phantom. They employed a series of blows and blows dry and hard which answered yes and never and thereafter assigned a code for letters of the alphabet. In this way, they could define longer and more detailed messages.