What kinds of optical turnstiles exist?
Optical turnstile housings come in a variety of sizes, and materials. The available sizes include a very small doorway mounted sensing package, a 4″ x 8″ x 38″ housing, and intermediate sizes up to 8″ x 60″ x 38″. Housings can be made from stainless steel, wood frame with laminate sides, synthetic Corian, granite, polished brass, and other exotic materials.
