Surf6 works by mapping firelight directly Light Direction Detection 2 (LDD2) uses the shadow effect and specular reflection to map a fire’s origin. Light Quality Detection (LQD) uses proprietary technique to map fire size and shape. High sampling rate detects Flicker. Surf6 is a modern use of Celestial Navigation: Light direction is described as two angles from a plane. Our LDD2 reports a 3D bearing to a light source. Surf6 protects life & property