When your fourth set of keys grows legs and walks off, it may be time for some help keeping up with your stuff. That’s where Hone ($60) comes in to save the day. Hone goes on your keychain and, together with the downloadable Hone app, locates your missing keys by producing a loud beep along with flashing lights up to 100 feet away. Compatible with iPhone 4S, iPhone 5, iPad, and iPad Mini.
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