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| Iris recognition is the only biometric
authentication technology specifically
designed to work in a one-to many search
mode. Authentication speed in 1-n is
dependent on hardware, and there is
no degradation of authentication integrity
even as database sizes scale into the
millions. Unlike other biometric technologies
that produce a short list of possible.
However the technology performs superbly
in 1:1 verification modes with tokens
or PINs. |
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Iris recognition
is ideal for use in the one to
many search environment because
the template is small and the
ability to search large databases
at speed with accuracy is unmatched
by any biometric. |
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A live present at the imager
results in a conversion of that
image to a template that is compared
against all other templates in
the database. |
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Unlike other biometric technologies,
that pull out a set of "possibles",
iris recognition uses the algorithmic
parameters to establish only one
best match. |
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The probability of misidentification
with one eye is 1 in 1.2 million.
The probability of misidentification
when two eyes are used is reduced
by many orders of magnitude. |
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When a subject is
enrolled in iris recognition with
a PROX card, 1:1 verification
can still be achieved. |
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At enrollment, the Wiegand number
associated with the card is bound
to the record and iris template
of the individual being enrolled. |
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After presenting the card to
the reader, iCAM prompts the cardholder
to look into the imager. |
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Looking into iCAM results in
creation of iris templates in
the ICU. |
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These templates are compared
to iris templates and Wiegand
numbers linked at the time of
enrollment. If they are, a verification
is made. If not, access is denied. |
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Card-card holder association
also allows the system to be programmed
to automatically set the camera
imager to the user’s height. |
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At enrollment, a PIN number
is associated with a users iris
template and a Card ID of the
individual being enrolled. |
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Upon entering the
PIN number on the keypad, iCAM
prompts the user to look into
the imager. |
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The PIN points to an iris template
pair in the database, to which
the template created by the live
present is compared. |
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If the to templates are judged
to be “matched” verification
is made, and the card ID is output
via the Wiegand port of the ICU. |
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If templates are not matched
, access is denied, and a reject
ID is outpt from the ICU. |
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The PIN prompt also allows the
camera imager to auto-set to the
user’s height. |
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The token-PIN-multi-iris configuration
also allows for scaled security
threshold setting in response
to varying levels in threat condition. |
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The 512 byte size
of an iris template allows 2 iris
templates to be efficiently placed
on a smart card. When smart cards
are used, there is no need to
maintain a central database, or
poll a database to make the authentication
decision. |
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In the 1:1 verification mode,
the smart card is placed against
the iCAM adjacent to the card
reader icon. |
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When the iris template from
the card is read, the card holder
is prompted to look into the camera
where and image is captured. |
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If the template generated from
the "live present" matches
the stored value from the card,
verification is successful and
access is granted. |
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When verification is made, the
system signals the access control
panel via Wiegand output. |
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Card intelligence allows the
system to be programmed to automatically
set the camera imager to the user’s
height. |
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