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MIT Technology Review

Digital Leash

February 23, 2010

Travelers who worry about leaving their phone in a hotel room or airport will like this small Bluetooth device designed to be worn on a keychain. The Zomm monitors the signal strength of a Bluetooth connection to your phone and sounds an alert if you get more than a few yards away. It can also be used as a speakerphone and as a panic button to call 911.

Credit: Joshua Scott