GoTenna is a small device that allows you to use your smartphone to send and receive messages and share your GPS location with others even when you don’t have service.
GoTenna allows you to send and receive texts and share GPS locations on beautiful offline maps, without ever relying on central connectivity.
Depend on it in all kinds of situations: when hiking in remote areas, traveling, attending music or sporting events or during an emergency. Plus, because goTenna is end-to-end encrypted, it’s not just for when you’re off-grid, but when you want to be.
How It Works:
All you need to do is just pair your smartphone with a goTenna and communicate off-grid with those near you who also have goTenna, anywhere on the planet, regardless of access to cell reception or wi-fi.
You can pair your smartphone to your goTenna device wirelessly, using Bluetooth Low-Energy (BTLE).
Your goTenna needs to be within 20ish feet of your phone, so that the two can communicate with each other.
You can use their free app to type out a text message or share a location. Your smartphone will send the message to your goTenna, which will then shoot it out, via long-range radio waves (151-154 MHz), to the intended goTenna(s).
At the other end, the exact same thing happens, in reverse: the recipient goTenna sends your message over BTLE to the smartphone app its paired with. All of this happens in a matter of milliseconds.