As more and more devices are showing up with GPS chips inside it's important to think about the usage model for these devices. I've just upgraded my Cingular phone to a new Hp iPAQ 6925 which has an embedded GPS chip. One of the cool features is to be able to take pictures with the GPS turned on and embedded your current coordinates inside the image.
The resulting image uses the latest EXIF standards which supports Geo-Tagging.
Here's a picture (pun intended) (link) of what the results look like.
I took a picture using my iPAQ which has a GPS inside it. I uploaded the file to Windows Vista and viewed it in the gallery. Then I uploaded the same file to our server and ran it through our software. As you can see quite a bit more information is revealed - including the exact time and location I took the photo.
What you will also note is that every piece of data in that photo is now available for search engines (if they only knew that it was there). None of this is rocket science - however for those people who are interested in Geotagging in real time from a GPS enabled camera it's now possible.
For those of you who want to see how much data is inside one of your pictures go to this page (link) and click on "Mobile Demo Page"… the first link on that page is 5o9 MobileMe Geo-Picture Location. This allows you to upload a picture to our web server (No personal information is recorded and the image is not saved).
If your picture has Geo information inside a link will be active at the bottom on the page that will send the GPS coordinates to MapQuest who will draw a map of your exact location. We've been tweaking the GPS program so that the position you send is rendered exactly. (This is important for certain business usage models such as fire and rescue, insurance adjusters, and people who get lost – exact position not something 200' feet away.)