It struck me someone on this list might know.<br><br>I currently collect trackpoints with a Windows Mobile phone & a tomtom gps with some simple software. I note there's a few systems for sending differential correction signals to improve the accuracy of the fix.
<br><br>Are any of these available over the internet? My phone has a fairly GPRS connection, and it would seem obvious to me to have the corrections available as a web service or similar. Is there such a service ?<br><br>
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