The GeoIP feature is very simple. iTracker360 will grab the persons IP Address when they submit the webform and populate your custom field, typically named IPAddress.
Once the webform is submitted, you should have your HTTP Post action created to send iTracker360 a HTTP post.
Here is how you add the HTTP Post back:
After the HTTP post back executed, iTracker will find the city/state/country/zip code from the users IP Address. We use MaxMind for our IP to Location provider. Maxmind is the most update to date and most accurate provider on the web. Each lookup costs money, but that cost is covered within your iTracker Ultimate subscription cost.
If you are not sure whether the HTTP post is working, you can look at the log that we record to help you troubleshoot the HTTP post request.
The log is located here: https://itracker360.com/member/feature_log.php