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The most common person verification
and identification methods today are Password/PIN
(Personal Identification Number) systems, and
Token systems (such as your driver's license).
But such systems have trouble with forgery, theft.and
hence it has been developed considerable interest
in Biometric Identification, which use pattern
recognition techniques to identify people using
their physiological characteristics. Fingerprint
is classic example of Biometric.Newer technology
include Facial recognition.
Facial recognition is latest Biometric technologies,
with systems showing the accuracy necessary for
commercial application. In other Biometric technology
such as fingerprint or retina recognition the
user need to position their body relative to the
sensor, and then pause for a second to `declare'
themselves. Apart from that in Facial Recognition,
it is unobtrusive that is it's able to recognize
at a distance without requiring a `pause and present'
interaction, and it do not restrict user movement,
and are now both low-power and inexpensive.
Face recognition has a natural place in these
next-generation smart environments. They are unobtrusive
(able to recognize at a distance without requiring
a `pause and present' interaction), are usually
passive (do not require generating special electro-magnetic
illumination), do not restrict user movement,
and are now both low-power and inexpensive. Perhaps
most important, however, is that humans identify
other people by their face and voice, therefore
are likely to be comfortable with systems that
use face and voice recognition
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