Hand-based Verification Biometrics in this category are based on measurements of the geometry of an individual's hand, of two fingers in the case of some systems. These systems have the lowest false acceptance rates of all of the available biometric methods. Such systems rely on the manner in which a signature is written, rather than its physical appearance, using either a special pen or a sensitive tablet to evaluate hand movement. Some systems though have difficulties with individuals whose signature changes substantially each type it is written. Voice Verification Much has been written lately about speech recognition, speaker verification and the idea of a computer being capable to recognize and identify a human voice.
Speech recognition is defined as the process of automatically recognizing what is being said.
This identification method called Biometric Technology or Biometrics, is defined as the statistical analysis of biological observations and human phenomena. We can examine and identify an individuals biometric features such as fingerprints, retinal patterns, and facial features, but an individual's speech pattern has more unique qualities and is often recognized as the most natural form of biometrics. The human voice is also considered the most common form of communication and is an ideal form of personal identification, because your voice can never be lost, stolen or shared without your knowledge.