"If you cross the Sahara on camelback without tweeting it, did it really happen?" asks the Wall Street Journal. The DeLorme inReach SE ($300 plus monthly fees) sidesteps that quandary by letting you send and receive texts, emails, tweets, and Facebook posts "even in the most remote locales." Since the device connects to the Web via low-orbiting satellites, you'll never need a cellphone tower nearby. Sure, it "looks like a chunky walkie-talkie" and won't work indoors. But it does its job, and can even create maps based on your coordinates to let friends monitor your progress during long treks.
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