Garmin Watch as Proximity Sensor - Wifi Integration

So, many of the new garmin watches, including the recently announced 920xt have wifi built in to upload workouts. Is there a way to use them as a prox sensor in Smartthings? It also has bluetooth?

Would be cool for the hub to know I am back from a run and turn on the lights and unlock the door

Bluetooth may be an option once hub v2 arrives as it is expected to have bluetooth in it.