I am using ruby + sinatra and the koala gem to make a facebook iframe app.
I would like to find out where each user is and not allow them to access my app if they are outside the USA.
Requiring the user_location permission only returns a city to me, not a country, and can also be set by the user in their facebook settings.
Thank you!
You can change this in the app’s advanced settings.
Insert your app id into the URL below where it says “YOUR_APP_ID”
https://developers.facebook.com/apps/YOUR_APP_ID/advanced