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How the iPhone Supplements GPS

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Over at Macworld, TidBITS editor Glenn Fleishman explains Apple’s curious statement that GPS positioning would take minutes without its secret sauce of Wi-Fi network and cell-tower location data. Apple (and other mobile device makers) supplement GPS with several clever techniques to get a faster fix.favicon follow link

 

Comments about How the iPhone Supplements GPS
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Some of the best writing you've done Glenn.