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See the Administrator's Guide Deployment State topic related topic.   

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Geo - Location

You can capture the location where your form was filled in by turning on ' Geo location feature. A forms knows it's current location and will submit that information when the form is completed.   uses the HTML5 GeoLocation api.  The geo api is well supported on tablet, phone and recent laptop/desktop browser versions. This feature works on a desktop or any GPS capable mobile device.

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