We're sure you've been in a situation where you've needed to reach someone in a crowded place, but there's no cell phone service. This can be extremely frustrating, especially when you're separated from your group of friends and need to rendezvous with them. Luckily, goTenna has developed a solution to this problem.
The goTenna is a two-ounce wand that you can stick in your pocket or attach to your belt loop. It connects to a smartphone app on your phone through Bluetooth LE (low energy). It won't let you browse Facebook or Twitter, but it will allow you to send texts. Watch the goTenna video below.