Smartphones can connect two people anywhere in the world, assuming both of them have service. Stumbling into an immensely large crowd of people all trying to use their phones at the same time or wandering into a patch of land that a carrier doesn't cover can instantly sever someone's connection to the outside world. This is typically inconvenient, but sometimes it can be life-threatening. That's why goTenna isn't just a potentially cool piece of upcoming tech, it may end up being a necessary one.

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