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I use Navionics on my iPhone, mainly because my chartplotter is too old to be reliable and installing a new one is a big step (c.f. my posts elsewhere about being on NMEA 0183 right now.) This has been generally fine, but my phone locks after a few minutes, which is a hassle at times. So on a...

I have been playing with Google Latitude on my cell phone. It allows you to track from the internet and the igoogle website any cell phone that has the Google Maps Latitude application running on it. It can use either a built in GPS or cell phone triangulation. Don't worry about security as...