Positioning your camera in an area with sufficient lighting will greatly increase your chances of capturing a usable still of a visitor's face. An area of shadow or darkness can present issues when trying to capture an image of a passing visitor's face, even when the camera is equipped with infra-red (IR) capabilities.

Ensuring that the camera is not placed in an area where there is too much lighting, is also just as vital. Some things to consider when you are thinking about lighting are where, and how the sun shines toward the camera lens. Although this may not be a problem at all times, at certain times during the day this can become an issue, rendering your facial recognition software useless during these times.

Another thing to think about is any nearby reflections; positioning your camera near mirrors and windows that can reflect light directly into the lens can present problems.

Ensuring your camera is positioned in the best possible place to capture faces is imperative. Install your camera covering an area where your visitors are most likely to walk past, if they were to enter or try to enter your premise. Some examples of this would be entrances, pathways, doorways, and reception areas.

In addition to this, having your camera facing above or below head height can negatively impact the chances of capturing the visitor's face. Test the angle of the camera to ensure it is positioned with the focal point of the camera pointed toward where a face is most likely to be.