Improved sensor technology could someday keep tabs on terrorists by remote control

This is how it will work: The sensor will collect a black and white image of a target, say a car, and will record the shape of the object. A hyperspectral image will plot the object's color as it appears in multiple wavelengths, from the visible light to the near and short infrared parts of the spectrum beyond what the eye can see. (This mode can tell the difference between two blue cars passing.) The third imagery mode, polarization, cuts through glare and gives information about surface roughness. It provides details that distinguish between objects of similar color and shape. (This mode can lock onto the unique material properties of the blue car in question.)

Improved sensor technology could someday keep tabs on terrorists by remote control