Each
of the biometric identifiers discussed above has its own compensation and
disadvantages. Thus, based on the submission scenarios, biometric system uses
one or more biometric identifiers attractive into deliberation a number of
factors. Researchers have recognized several necessities that a biometric
identifier needs to enjoy in order to be used in a verification system. These
requirements are either imaginary or sensible. Imaginary requirements include:
·
Universality: Each person in the
population should have the biometric identifier.
·
Distinctiveness: Identifiers for two
persons erratically selected from the whole population should be adequately
different across individuals comprising the population.
The
word ‘Biometric’ is a composite of two parts: the Greek words ‘bios’ (life) and
‘metron’ (measure). Biometric is
sometimes definite as a research area paying concentration on measuring and
analyzing a person’s exceptional characteristics. Biometric systems are
becoming all the time more popular due to some factors as well as increased
need for reliable and opportune verification, decreased costs and increased
government and industry implementation. With biometric based authentication,
there is nothing to lose or forget unlike with physical tokens (keys, cards) or
information tokens (PIN, code) in conventional security verification systems.
In addition, the cost of biometric systems was brought down.
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