Home much success have you have with GeoDNS? We've seen it fail when users are using privacy respecting resolvers like 1.1.1.1. It gets the continent right but fails on city/state level.
Which APIs would one use to implement this feature on Mac and Windows? For example is there a OS level flag that one can include on windows to not allow capturing of the app’s window - or is a notification sent out when someone tries to capture the screen (and then one can just blank the window)?