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Major
factor
that
affects
the
performance
of
written
signature
technology
comes
from
the user condition when the written signature is captured.
Signing too quickly and
different signing positions, sitting or standing could
make technology
fail to authenticate
[10].
Communication Intelligence Corporation and Cyber SIGN are two vendors that produce
software for signature authentication [2].
Keystroke Dynamic
Keystroke
dynamics
technology
detects
user’
behavior
while
typing
at
computer
keyboard and uses unique features of that behavior to authenticate the user. It collects
information about the time delay between hitting various pairs of keys and the amount of
time a person takes to hit and release each key. One advantage
is that this
technique does
not require additional equipment to sense user behavior [2].
In enrollment or authentication process, user types his or her password and waits for 2-3
seconds until the system responds, giving the result to the user [11].
Future Biometric Technology
Other biometric technologies are still on exploratory stages. These include DNA, ear
shape, odor (human scent), finger geometry, nail bed (ridges in fingernails)
identification, gait (manner of walking) recognition.
Ear
technology
extracts
the
complicate
structure
that
varies
significantly
between
people.
Odor-based
technology
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