novel personal authentication system using heart sound
waveform and/or breathing waveform pattern which
promptly judges personal authentication of a person to
be authenticated with a very high degree of accuracy. The
personal authentication system is comprised of a waveform
detection means which detects a heart sound waveform
pattern and a means which compares a heart sound waveform
pattern detected by the waveform detection means with a
previously registered heart sound waveform pattern. If the
detected heart sound waveform pattern coincides with the
registered heart sound waveform pattern, the system
authenticates the person to be identical. In such constitution,
the system can check the autonomic heart sound which cannot
be controlled by a personal will based on the previously
registered heart sound waveform pattern in real time, and
performs personal authentication of the person to be
authenticated with very high accuracy promptly.
The strength of a biometric system is determined mainly by
the trait that is used to verify the identity. Plenty of biometric
traits have been studied and some of them, like fingerprint,
iris and face, are nowadays used in widely deploy systems.
Today, one of the most important research directions in the
field of biometrics is the characterization of novel biometric
traits that can be used in combination with other traits, to limit
their shortcomings or to enhance their performance.
The aim of this paper is to introduce the usage of heart
sounds for biometric recognition, describing the strengths and
the weaknesses of this novel trait and analyzing in detail the
methods developed in future and their performance.