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For a more high-tech approach, combination radar-laser detectors, which are legal everywhere but Virginia (unlike jammers, which are banned widely), have a chance of picking up radar and lasers from today's automated systems, but only if the gadget is sufficiently sensitive, and correspondingly pricey. But possibly the most useful anti-speed cam feature of a product such as Escort's $500 Passport 9500 ix (one of the best performers at Peterson's site, radartest.com), is the ability to sound an alarm based on the GPS locations of known fixed cameras, since by the time their narrow, short-range beams are detected, it's often too late.
