An interesting video about the near future benefits of GPS
as well as some problems that could make your GPS potentially unreliable:
GPS dots will be nice....but not wave bubbles or GPS spoofers...
http://www.ted.com/talks/todd_humphreys_how_to_fool_a_gps.html
as well as some problems that could make your GPS potentially unreliable:
GPS dots will be nice....but not wave bubbles or GPS spoofers...
http://www.ted.com/talks/todd_humphreys_how_to_fool_a_gps.html