GPS is cheap, available, accurate, and wildly successful. That has freaked out some people. To learn about GPS vulnerabilities, proposed enhancements, and possible alternative navigational systems, read here.
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American Reliance, Inc.
789 N Fair Oaks Ave,
Pasadena, CA 91103
Office Hours
Monday-Friday:
8:00 am – 5:00 pm PST
Saturday: Closed
Sunday: Closed
Main: +1 (626) 482-1862
Fax: +1 (626) 226-5716
Email: AskUs@amrel.com
Relevant discussion from GPSWorld LinkedIn group:
http://www.linkedin.com/groupAnswers?viewQuestionAndAnswers=&discussionID=140348877&gid=1866444&trk=eml-anet_dig-b_nd-pst_ttle-cn&ut=1Iq-0Mic7jUBk1