In a typical office, biometric authentication might be used to control access to employees and registered visitors only. We know the system will have some false negatives, some employees falsely denied access, so we need a human override, someone who can examine the employee and allow access in spite of the failed authentication. Thus, we need a human guard at the door to handle problems as well
as the authentication device; without biometrics, we would have had just the guard. Consequently, we have the same number of personnel with or without biometrics, plus we have the added cost to acquire and maintain the biometrics system. Explain the security advantage in this situation that justifies the extra expense.
What will be an ideal response?
Some
possible
answers:
By
automating
the
vast
majority
of
authentications,
the
guard
can
better
scrutinize
the
few
that
require
manual
intervention,
and
the
guard's
choices
can
be
audited
more
easily.
Also,
the
guard's
newly
acquired
downtime
can
be
spent
on
new
security
tasks.
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