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Tips for calling 911 with a cell phone - A peek under the hood
I am a software developer working with online maps and location technology. Earlier this year I became interested in what happens when someone with a cell phone calls 911. In particular I wanted to know the details of how the 911 dispatcher learns the *location* of the caller. What kind of...- Jelf
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- Replies: 7
- Forum: General Discussion Forum
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J
Online maps showing public land boundaries - and more - with geolocation
Most states have detailed information on GIS (Geographical Information System) servers that can show the boundaries of various kinds of public land at the federal, state and local level. Government agencies also have other GIS data that is useful for all kinds of outdoor activities from hunting...- Jelf
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- Replies: 0
- Forum: General Discussion Forum
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J
Gmap4 = View topos/aerials *offline* and your geolocation
I have posted here before about Gmap4 which is an enhanced Google map viewer that I developed. Up until this summer I believed that Gmap4 would not work if your mobile browser was offline. I was wrong. If you follow a few simple instructions, many (but not all) of the Gmap4 features will work...- Jelf
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- Replies: 6
- Forum: General Discussion Forum
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