I have a weakness for clever geolocation startups. I've written about companies that geolocate by WiFi and by television broadcast signal instead of GPS. In May I found two cool that push up-to-the-second traffic data to cars' navigation systems. In August I covered a geolocation system that uses peer-to-peer technology. And today I posted a column about GeoVector, which adds orientation data to GPS, so your handheld device knows not just where it is, but what it's pointing at. There sure is a lot of interesting activity in this space.
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