The Sunlight and Hard Light may lead to big differences between site image and
registered image; backlight, side-light and strong light will influence the recognition
experience. (Analysis: from the view of human eyes, the color changes on face skin may
result in wrong recognition of identity; unclear exposure area, no matter large or small,
may influence the identity judgement.)
Sunlight Shines Indoor Glass Window
Sunlight Shines Through the Door, with
Glass Window at One Side
Sunlight Shines Through the Door
Glass Window or
Class Wall
Hard Light
Door
Wall
Curtain
Device shall be installed in places avoiding backlight, side-light and strong light.
The recommended place for Installation ( Please keep
3m away from the window, or does not influenced by
sunlight, can be considered for installation)
Backlight, side-light or direct strong light, not
suitable for installation.
Other areas, install in suitable places according
to actual light impact.
Door
Light
Wall/Shields
Door
Light
Wall/Shields
Light
Door
Door
Wall
Door
Glass wall
Wall/Shields
Light
Back LightStrong LightSide Light
Installation
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