Exar

An exar, also known as an entropic radar, is a device similar to a radar that uses very low levels of entropic radiation instead of electromagnetic radiation as its sensing medium. Because K-particles possess a very high level of penetration even through concrete and water and pass through forcefields, exars are commonly used by adversaries for imaging the interior of high-security facilities. They are also often used in exoarcheology as an alternative to ground-penetrating radars. Like a manifold anchor, an exar generates e-rad by striking a galraite slug with an exotic particle beam; it is then fed through a collimator and magnetic deflection coils. After bouncing back, the particles hit high-sensitivity fractal strain gauges, and the data is fed into an analysis system that builds a three-dimensional model to show to the operator.

To avoid triggering enemy e-rad sensors when used for military purposes, the energy levels are commonly set very low; the lower the energy levels, the longer an exar takes to build an image, and as such it is not uncommon for one to be left in position for weeks or months. Additionally, because of the low amount of galraite used in exar units, they are regulated by the Industrial Exophysics Regulatory Commission (IERC) and available for purchase by any corporation holding an Anomalous Materials License (AML).