Iritech IriShield-USB MK 2120U - Safety and System Requirements

8
Confidential and Proprietary Information
IriShield
TM
-USB MK 2120U Basic User’s Guide
4 Warnings and Precautions
4.1 Hardware
IriShield
TM
-USB device includes sensitive electronics and optics. It is possible for IriShield
TM
-USB device
to get these electronics damaged if you do not follow proper precautions:
 Clean regularly to remove dust, but do not use any cleaning solutions. Only wipe the device with
a smooth cloth or towel. Keep the lens free of dust and dirt, and use a special optical cloth in
order to not scratch optics.
 Do not allow water to leak into the device or operate the device in humid conditions where
water might condense upon the electronics.
 Do not operate device in places where temperature reach extremes beyond the stated range.
 Do not place the device next to heating equipment.
 Do not place magnets near the device.
 Do not apply voltage or current beyond the stated range.
 Do not use the device for any purposes beyond those specified.
 Do not disassemble components from the boards or alter wiring or board design.
 Do not drop the device or submit it to sudden impact or mechanical stresses.
 Handle the electronics with proper anti-static protection and techniques to prevent shorting any
microchips.
Any damage to the device caused by these activities will void the warranty.
This document describes guidance to use IriShield
TM
-USB device as well as IriSmartEye 2000 application
in the most proper way. If user does not follow the guideline, errors or wrong results may occur.
4.2 Software
To prevent faulty matching, the following guidelines should be considered carefully by developers.
Please be warned that the threshold numbers given in this section are only for reference. Developers
should have their own decisions to balance between accuracy and usability based on their iris database.
4.2.1 Enrollment
 Image quality: Total score and usable area should be greater than 70 (>70), the captured
image is ideal for enrollment. If either total score or usable area is less than or equal to 50
(<=50), the image should be rejected.
 Horizontal rotation: For enrollment, horizontal rotation angle of eye postures should not
exceed ±10 degrees.