GPS Location Widget is not displayed on published form

I did add a GPS location widget on the form. We want to work with ipad and want to know the location where the form is filled in. 

I thought this will work with the GPS widgets, but in my form details this add-on will stay emty. how can I collect there data?

Hope to hear from you

Hello!

In order to use the GPS Location widget, you must provide a "Google Maps API Key" in the Widget Settings panel. If you don't have a key, you can obtain one following the instructions on this link: https://developers.google.com/maps/documentation/javascript/get-api-key