I saw this application and immediately thought of the mobile marketing tool ability and how this could be used for location based services.
ZoneTag is a research prototype from Yahoo! Research.
ZoneTag can automatically tag your photos with the location, based on the cell tower, in which they were taken. The location of the cell tower is not known until our user community updates the city, state, or zip code of their photos on Flickr.
ZoneTag is then able to map the cell tower to the location.
If a user uses ZoneTag with a Bluetooth GPS unit, then the GPS coordinates of the image will be uploaded together with a cell ID.
This cell ID corresponds with the city, state and zip code of those GPS coordinates and so Yahoo is able to determine the exact location .
There are many applications Yahoo could use this for. Does Google have a LBS application yet?
Currently, ZoneTag only works on Nokia Series 60 phones. ZoneTag is known to work on 6620, 6670, 6680, 6681, 6682, 7610 and N70 models, and it is likely to work on 3230, 6630, 6260 as well.