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Euphenics which literally means ‘good appearance’ or ‘normal appearing’, is the science of making phenotypic improvements to humans after birth, generally to affect a problematic genetic condition. Eugenics is the practice or advocacy of improving the human species by selectively mating people with specific desirable hereditary traits. Euthenics i t is the study of control of the environment with a view to improving the health and living standards of the human race. Biometrics authentication (or realistic authentication) is used in computer science as a form of identification and access control.