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A multimodal biometric system uses multiple
applications to capture different types of biometrics.
To achieve the stringent performance requirements
multimodal biometric system allows the integration
of two or more types of biometric recognition
and verification systems.
A multimodal system could be, for instance, a
combination of fingerprint verification, face
recognition, voice verification and smart-card
or any other combination of biometrics. This enhanced
structure takes advantage of the proficiency of
each individual biometric and can be used to overcome
some of the limitations of a single biometric.
A multimodal system can combine any number of
independent biometrics and overcome some of the
limitations presented by using just one biometric
as your verification tool. There are some people
who does not have legible fingerprints, a voice
could be altered by a cold and face recognition
systems are susceptible to changes in ambient
light and the pose of the subject. A multimodal
system, which combines the conclusions made by
a number of unrelated biometrics indicators, can
overcome many of these restrictions. Multimodals
are generally much more vital to fraudulent technologies,
because it is more difficult to forge multiple
Biometric characteristics than to forge a single
Biometric characteristic.
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