Bluetooth 4 is proving to be quite a lot more than just an incremental spec bump to the wireless protocol. Thanks to its super low power needs, Bluetooth 4 is finding all sorts of clever uses. Example: The Hone, a key fob which can talk to your iPhone whenever you lose your keys, and yet Related StoriesThe SSD In The New MacBook Air Is 217% Faster Than BeforeHow AirPlay Is Apple’s Secret Weapon Against AndroidCatch Up On Everything You Missed At Apple’s WWDC 2012 On The CultCastGoogle Offers Now Ready To Save iPhone Users Some CashChevy Spark And Sonic First To Announce Siri’s Eyes-Free Capability [Report]

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Bluetooth Keychain Connects To iPhone, Last For Six Months On A Single Button [Kickstarter] Cell [Kickstarter]