For those times when your cell service provider is not working or when you’re in an area where there’s no coverage, a device called the goTenna keeps you connected by letting you send messages to other goTenna users for free, even if you don’t have a signal or working internet connection.
goTenna is a Bluetooth-LE-equipped device that pairs with your smartphone (range of up to 20 feet) and, with the help of an app, lets you send messages or share your GPS coordinates to other goTenna-equipped smartphones for free. It uses low-frequency radio waves to transmit messages so it doesn’t rely on cell towers, WiFi, or working Internet connection. It works even if your smartphone is in Airplane mode.
The goTenna claims a range of up to 50.5 miles depending on your elevation and environment. It is also water-resistant and dust-tight so it’s good for outdoor use.
goTenna app features:
* Send & receive text messages for free
* Share locations on detailed offline maps
* Instantaneous transmission within range
* Automatic message retry & delivery confirmation
* Individual & group messaging
* “Shout” broadcasts to anyone within range
* Proximal friend map & location pinging
* Emergency chat
* End-to-end encryption (RSA-1024) & self-destructing messages
* Compatible with iOS & Android
goTenna hardware specs:
* 2-watt radio
* Flash memory good for 1000’s of messages
* Rechargeable Lithium-ion battery
* Micro-USB connector
* Bluetooth-LE data interface
* Status indicator lights
* Nylon attachment strap
The goTenna sells for $150 per pair and will ship in the U.S. and Canada in October.