Pretty much every device you can buy with a satellite navigation function, relies on the U.S. built GPS network for coverage. But now this monopoly is being challenged by similar systems created by other countries. The latest iPhone 4S works on the GPS system just like other smartphones, but it also supports the Russian GLONASS network as a secondary system.
Thank you for your loyal readership! And look for our sister site, Blastr, To start reporting more on the world of innovative technology, science and design. Go to Blastr.com now