The present invention facilitates transparent and cost effective capture, sharing, and re-use of knowledge in informal media such as audio, video, and individual sketching actions. The LED lens includes a batwing surface formed by rotating a parabolic arc about an end of the parabolic arc over a center of the optical emitter. Video streams, resulting from the contained video cameras could then be combined into single composite video for analysis. A second electrode is configured to attach to a first alternate location of the mammal in a manner suitable for obtaining a second electrical signal. The digital counter generates a counting value based on the digital phase signals.