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While adding geo-information to web sites is interesting, I think the more compelling technology is the location-aware technologies that are starting to come out. Things like Vindigothat provide that information ina package, or things like Geocache and AnnotatedEarth that provide a user-driven community of location information. As the author says, Ultimately, the logical conclusion of wireless graffiti systems would be the ability to attach information to any object or place on earth with an accuracy of a meter or less.

The challenge now is to figure out how to best use those location-aware technologies, and some of the things that can be done with the technology.

t just depends what you're using the GPS data for. For most people in cars, it shouldn't be too bad (even though I can think of some times when directions from my GPS came within seconds of when I was supposed to be hitting a off ramp. That 100-300 meters would mean I missed it). If you're using the GPS for location-aware technology, like AnnotatedEarth, then you're more likely to have a problem (as that technology is all about what's really close).

It'll be interested to see if they actually turn SA back on or not. And if they do, will it be world-wide or can they really selectively turn regions off? Of course, as you want to hit 3+ satellites at a time, that will still effect a lot more that Iraqi. For example, right now Salman Pak (Iraqi Bio-war site) can see:

GPSBIIA-16(PRN01) GPSBIIA-25(PRN03) GPSBIIR-03(PRN11) GPSBIIR-06(PRN14) GPSBIIR-04(PRN20) GPSBIIA-12(PRN25)

Turning SA on these 6 Satellites would screw up GPS in Iraqi - and a large portion of that hemisphere.

t just depends what you're using the GPS data for. For most people in cars, it shouldn't be too bad (even though I can think of some times when directions from my GPS came within seconds of when I was supposed to be hitting a off ramp. That 100-300 meters would mean I missed it). If you're using the GPS for location-aware technology, like AnnotatedEarth, then you're more likely to have a problem (as that technology is all about what's really close).

It'll be interested to see if they actually turn SA back on or not. And if they do, will it be world-wide or can they really selectively turn regions off? Of course, as you want to hit 3+ satellites at a time, that will still effect a lot more that Iraqi. For example, right now Salman Pak (Iraqi Bio-war site) can see:

GPSBIIA-16(PRN01) GPSBIIA-25(PRN03) GPSBIIR-03(PRN11) GPSBIIR-06(PRN14) GPSBIIR-04(PRN20) GPSBIIA-12(PRN25)

Turning SA on these 6 Satellites would screw up GPS in Iraqi - and a large portion of that hemisphere.

So I'm just trying to figure this out - is this actually broadcasting a signal in a single area, or is the device using cell-network/GPS/whatever to figure out location? The idea of location-area tech has been around for a while. A lot of research has been done on this, like Cornell's Graffiti, ABTA, Intel, and somewherenear , but I haven't seen lot of practical application actually come out.

I ran across something new that does something like this that I have some hope for, called annotated earth. They appear to be in the initial stages still, but the way it works appears to be open (as in encouraging third party software - they seem to be the infrastructure and data for location-aware info). I especially like the Iraqi Weapons of mass destruction thing, good info to have if you're wandering around Iraqi, Hehe. Don't know if it's really going to work, still waiting on mobile devices that can use the technology they've done.

Anyway, I'll be interested in seeing how this goes.

=-H

So I'm just trying to figure this out - is this actually broadcasting a signal in a single area, or is the device using cell-network/GPS/whatever to figure out location? The idea of location-area tech has been around for a while. A lot of research has been done on this, like Cornell's Graffiti, ABTA, Intel, and somewherenear , but I haven't seen lot of practical application actually come out.

I ran across something new that does something like this that I have some hope for, called annotated earth. They appear to be in the initial stages still, but the way it works appears to be open (as in encouraging third party software - they seem to be the infrastructure and data for location-aware info). I especially like the Iraqi Weapons of mass destruction thing, good info to have if you're wandering around Iraqi, Hehe. Don't know if it's really going to work, still waiting on mobile devices that can use the technology they've done.

Anyway, I'll be interested in seeing how this goes.

=-H