Biometrical identification has not been adopted to be a key technology in computer security as was hoped for, or to the extent the sophistication of the technology would promise. One reason for this might be that the application of biometrical identification has not yet gained wide enough scale, which leads to missing positive network externalities.In this paper the concepts of biometrical identification and network externalities are discussed, and an analysis is performed on why missing positive network externalities are hampering the advance of biometrical identification.