Yes, you can use geofencing and shortcuts at the same time. Your thermostat will adjust the temperature based on the most recent trigger – whether you cross your geofence boundary, manually change the temperature at the thermostat, or have a time or event based shortcut programmed. For example, if you have a shortcut that is set up to increase your temperature at 5 PM, it will trigger at that time. If shortly after, you leave your house and cross your geofence boundary, the temperature will adjust to save energy. Regardless of what triggers it, your thermostat will respond to the most recent action.