Counting users in a geo location

view story

http://stackoverflow.com – I would like to implement a user count in a particular location on a map in HTML5. The HTML5 code would be implemented inside an Android application. Here are the steps what i have thought of: Store the latitudes & longitudes of the location in a server side database. Store a counter variable at server side database. Users opens the Android application (current location calculated). If current location is approx = to stored location then => XMLHttpRequest object sent to database server that stores the user's IP address and increments the counter I have two issues. One is how to ident (HowTos)