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Originally Posted by thoughtful
I thought that this years banner sensors are also retro reflective tape, as it turns out they are diffuse, can anyone tell me what type of surfaces or colors they can detect.
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Pretty much anything that reflects the detector light, including the carpet if your sensitivity is adjusted too high, and retroreflective tape. The effect of the diffuse light is to restricted detection range.
From the site Dave referenced here are detectabilities of some common materials:
http://info.bannersalesforce.com/xpe...1_s1_e.pdf.pdf