Let's face it, our mobile\u00a0phones are an extension of our hand (and brain), so what happens when we see that dreaded "No Service" message? Utter. Panic.\u00a0Whether it's at\u00a0a\u00a0mammoth gathering of music fans at a festival, a mountain-side hike\u00a0off the grid,\u00a0or in the wake of\u00a0a natural disaster,\u00a0 goTenna \u00a0knows that it's important to be able to get in touch no matter the situation\u2014and they're using cutting edge technology to make it happen. Click\u00a0the video above to learn more about how this\u00a0pocket-sized\u00a0device can change your world.\u00a0 See more Inventionaries who are changing the way the world works here . Follow\u00a0 Marie Claire on Facebook \u00a0for the latest celeb news, beauty tips, fascinating reads, livestream video, and more.