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IriShield
TM
-USB MK 2120U Basic Userās Guide
Soft contact lenses are not likely to cause problems. Hard contact lenses can create glare
that covers part of the iris and make capture more difficult.
2. Is the iris affected by LASIK eye correction, or any other correction surgery, or by disease?
A. Disease or surgery that covers or changes the iris pattern may interfere with iris recognition.
However, most eye surgeries or diseases do not have these impacts. For example, LASIK eye
correction should not cause any changes to the iris. An example of surgery that might cause
challenges is intraocular implants. These implants are similar to wearing hard contact lenses
and may cause glare that makes capture more difficult.
3. Why does the user have to move slowly forward during the capture procedure?
A. To begin the capture, the user must be at the appropriate capture distance and in complete
focus. Moving forward slowly is the best way to achieve the right distance.
5. Although the iris camera is installed indoors, there is a reflection on the iris image. What should I do?
A. The problem may be caused by another source of light such as fluorescent bulbs, sunlight
from a window, or the reflection from a mirror. Adjust the location of camera and/or user
and try to capture the image again.
6. When I use the Time-Based option on the Capture Mode setting, what is the maximum time
limitation?
A. 600 seconds.
7. When I use the Frame-Based option on the Capture Mode setting, is there a time limit during the
capture process?
A. There is no time-limit in the IriSmartEye 2000 program. However, the limitation of Frame-
Based value is 600 frames.
8. Is there a way to examine all the images captured during a particular capture process?
A. No, only the best image is saved at the end of the capture process. For example, if you
specified three frames in the Frame-Based option, the capture process will stop after it
selects three qualified frames. It will then choose the best frame and save that to the
computer. The other captured images will be discarded.
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