Male and female distinction is necessary to make security stronger and when various statistics on the
visitor are taken in commercial facilities and so on. The conventional method of man and woman distinction
is currently determined by using the person's appearance, the person's dress and in such cases, the way of
walking, the foot pressure, the hair type. But, these characteristics can be intentionally changed by human
intervention or design. The proposed method gets a difference in the male's and female's characteristics by
taking images of the fat distribution of the person's face by near infrared ray camera. This is a male and
female distinction based on the new concept idea which this is used for. Consequently, this can be used
to distinguish a male from a female even if a male turns himself into the female intentionally (and vice
versa), because this method involves biometrics authentication.
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