Biometrics Modalities - Biometrics

What is Biometric Modality? How does it help?

A biometric modality is a category of a biometric system where it takes human traits as an input depending upon their physical and behavioural characteristics.

The biometrics is highly statistical. The data that is available from sample is said to be true, then the system is likely to be unique and reliable. It can also work on various modalities depending on the measurements of individual’s body and features, and behavioral patterns. The modalities are classified based on the person’s biological traits.

Types of Biometric Modalities

There are various traits present in humans, which can be used as biometrics modalities. The biometric modalities classified under three types −

  • Physiological
  • Behavioral
  • Combination of physiological and behavioral modality

The following table gives the information of the points that differentiate these three modalities −

Physiological Modality Behavioral Modality Combination of Both Modalities
This modality pertains to the shape and size of the body. This modality is related to change in human behavior over time. This modality includes both traits, where the traits are depending upon physical as well as behavioral changes.
For example −

  • Fingerprint Recognition
  • Hand Geometry Recognition system
  • Facial Recognition System
  • Iris Recognition System
  • Hand Geometry Recognition System
  • Retinal Scanning System
  • DNA Recognition System
For example −

  • Gait (the way one walks)
  • Rhythm of typing keys
  • Signature
For example −

Voice Recognition

It depends on health, size, and shape of vocal cord, nasal cavities, mouth cavity, shape of lips, etc., and the emotional status, age, illness (behavior) of a pers

In the subsequent chapters, we will discuss each one in detail.

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