Abstract: A system includes a processor configured to receive a tether activation instruction, including a range. The processor is also configured to wirelessly communicate with a mobile wireless module, responsive to the activation instruction. The processor is further configured to track the mobile wireless module as the module travels and issue an alert when the tracking reveals that the mobile wireless module has reached an outer edge of the range, measured from a processor-location.

Abstract: A moire interferometry system for detecting defects in a surface of a panel. The moire interferometry system is adapted to be used as a defect detection tool and not specifically as a surface measurement tool. The system includes a moire projection system having a light source and master grating projecting grating lines onto a surface panel to be inspected. A viewing system with a detection means records an image of the surface with the master grating lines on it as viewed through a submaster grating. The intersection of the projected lines on the panel and the lines in the submaster grating produce moire fringes. Phase shift interferometry techniques are used to produce a phase map of the surface for a plurality of phase shifted moire fringes. A derivative operation is performed on the image, and that image thresholded to identify areas of pixels having the greatest change in contour.