Tracking is updated via my Spot Gen 3 Tracker, which is consumed by SpotWalla via XML feed and presented in an iFrame embed here. My device is two years old and I still average 50+ hours on a single charge. There are other options including those with text messaging via Bluetooth to your phone. Drastically different costs apply… do some research to find one that’s right for you.
I’ll be keeping the tracker on while traveling, you should see an update every 5-15 minutes.