Ask away!<p>Devices can either use cellular networks or satellite networks. The amount of data sent is extremely small, so bandwidth isn&#x27;t an issue. The device can wake up, get a fix, store it, and then sleep again for a set duration of time. They&#x27;re off the shelf, or you can build a custom device using an Ardunio board (or any microcontroller really).<p>Your endurance is limited only by the size of the battery you use (and if you use solar somehow, infinite).