Does anyone use the follow me function, using an external GPS receiver like the Garmin Glo could explain how accurate it is and if it really works?

Hi, thanks for the inquiry. The follow me function would rely on the GPS of your mobile device to continuously track your movement. However, using a third-party external GPS accessory may not be guaranteed the outcome since the process hasn't been tested by our designated department. We're hoping that you could get the best feedback that you may need. Thank you for understanding.