the iris of the human eye to identify authorized, enrolled personnel. The
device shall use ambient light to capture an image of the iris of a person
presenting themselves for identification. The resulting video image shall
be compared against a stored template that was captured during the
enrollment process. When the presented image is sufficiently similar to
the stored image template, then the device shall authenticate the
presenting individual as identified. The threshold of similarity shall be
adjustable. The efficiency and accuracy of the device shall not be
adversely affected by enrollees who wear contact lenses or eye glasses.
The iris scan device shall provide a means for enrollees to align their eye
for identification that does not require facial contact with the device. A
manual push-button shall be provided to initiate the scan process when the
enrollee has aligned their eye in front of the device. The device shall
include adjustments to accommodate differences in enrollee height.
a. Display Type: Iris scanners shall include an LED or other type of
visual indicator display and provide [visual] [visual and audible]
status indications and enrollee prompts. The display shall indicate
power on/off, and whether enrollee passage requests have been accepted
or rejected.
b. Template Update and Acceptance Tolerances: Iris scanners shall not
automatically update an enrollee's template. Significant changes in an
individual's eye shall require re-enrollment. The iris scanner shall
provide an adjustable acceptance tolerance or template match criteria
under system manager/operator control. The iris scanner shall
determine when multiple attempts are needed to verify the iris being
scanned, and shall automatically prompt the enrollee for additional
attempts up to a maximum of 3. Three failed attempts shall generate an
entry control alarm.
c. Average Verification Time: The iris scanner shall respond to
passage requests by generating signals to the local processor. The
verification time shall be 1.5 seconds or less from the moment the eye
scanner initiates the scan process until the eye scanner generates a
response signal.
d. Modes: The iris scanner shall provide an enrollment mode,
recognition mode, and code/credential verification mode. The
enrollment mode shall create an iris template for new personnel and
enter the template into the system database file created for that
person. Template information shall be compatible with the system
application software. When operating in recognition mode, the iris
scanner shall allow passage when the iris scan data from the
verification attempt matches an iris template stored in the database
files. When operating in code/credential verification mode, the iris
scanner shall allow passage when the iris scan data from the
verification attempt matches the iris scan template associated with the
identification code entered into a keypad or matches the iris scan
template associated with credential card data read by a card reader.
e. Reports: The iris scanner shall store template transactions
involving iris scans. The template match scores shall be stored in the
matching personnel data file in a file format compatible with the
system application software, and shall be used for report generation.
f. Electrical: The eye scanner shall not dissipate more than 45 Watts
from the voltage source shown.
SECTION 13720A
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