Quote:
Originally Posted by CWGUY
 Post #8 in the link GG provided. 
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I actually find that hard to really believe and it may have lost something "in the translation" from the source. I highly doubt they don't look at house numbers (maybe not to the exclusion of GPS but likely in addition to gps). I'd have to hear that for myself. I find it pretty concerning since all of our GPS's work the same and other than the Fed IA's their accuracy isn't 100% which is why my name and address is on our light post and I have reflective numbers on my home (not window). I'd hate to find the ambulance pulling up next door or on the street behind me. GPS's accuracy can be off by 30-200 feet or more depending on ones location and the number of satellites in view of the GPS device. In some areas there could even be no GPS coverage due to obstacles.