Speed cameras and traffic-signal cameras aren't new to the United States, but their use is rapidly-and some would say alarmingly becoming more widespread. Happily, Escort now offers a radar detector with GPS capability and a built-in database of known safety-camera locations and speed traps. Approach a known trap or camera site, and the Passport 9500ix sounds a warning. The 9500ix's database can be updated via the Internet (a USB cable is required), which should keep the miniature marvel from becoming obsolete before you open the box. The unit's other nifty feature is its ability to automatically filter and record false alarms from motion detectors or automatic door openers-drive past the same bogus signal a few times, and it's stored for future reference. escortradar.com, $500