They looked it, too—at close range they had the strange aura of scientific instruments. Nonconsumer items, very specialized, very clean. Heavy, too—a skin of tough black plastic, but packed tight with pricy superconductive circuitry. They had no real lenses in them—just thousands of bit-mapped light detectors. The raw output was a prismatic blur—visual software handled all the imagery, depth of focus, and so on. Little invisible beams measured the position of the user’s eyeballs. The operator, back at his screen, didn’t have to depend on the user’s gaze, though. With software he could examine anything in the entire field of vision.