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Titled "Imaging Range Finder Fabrication" at the U.S. Patent and Trademark Office, Apple's new patent application describes a range finder comprised of a lens and an array of emitters and photodetectors in "optical communication with the lens." The device would "be incorporated into ... a mobile phone, digital media player, or a personal computer."

According to the text, the array of emitters would emit light that would be directed by the iPhone's lens toward an object. The light bouncing back off the object would pass back through the lens and be received by the photodetectors in the array. With

A few screenshots of Apple's iOS 8 have popped up on the the Chinese forum WeiPhone, and 9to5Mac claims to have verified the authenticity of the images. The screenshots reveal the icon for Apple's rumored Heathbook app, which is supposed to tie-in with the company's long rumored iWatch.

The Healthbook app is Apple's attempt to tap into the popular world of mobile healthcare and fitness. The new iOS 8 feature is a lot like Samsung's S Health 3.0, which is included on the Galaxy S5 smartphone, and Gear 2 and Gear 2 Neo smartwatches. The Healthbook app will track a users vital signs such as blood pressure, hydration levels, and heart rate, plus it will remind users to take their daily medications.

Next week, users of the Starbucks iPhone app will notice significant improvements to their coffee buying experience. The company has revealed that enhancements to the app are in the pipeline and will be released in a March 19 update.

Customers in the US, UK and Canada will be able to leave their barista tips directly from the iPhone at over 7,000 Starbucks locations. Considering that Starbucks reports over 11 percent of all transactions now occur using a mobile device, baristas must be happy to hear that generous customers can easily deliver a gratuity without cash.

Audio books are are a great way to catch up on all the books you want to enjoy but don't have time to read. You can listen to them while you jog, or on long car rides / flights or while you cook and clean, but the only problem is that they tend to be more expensive than the print editions of the same book. For example, the Divergent unabridged audio edition is $14.95, and a used copy of Divergent in paperback is only $5.95 on Amazon.com. Even with shipping costs the print edition is cheaper, but that's where Audible comes in.

Audible is a subscription-based service from Amazon.com which gives members access to more than 150,000 audio book titles. If you listen to a lot of audio books, an Audible membership may be something you want to consider.

The motto save money takes on new meaning for Walmart customers looking to purchase a brand new iPhone. The company is now offering the iPhone 5s for $119 and the iPhone 5c for just $29. Both deals require a two-year service agreement with AT&T Mobility or Verizon Wireless.

These new prices on 16GB handsets are highly competitive, slashing $26 off the previous iPhone 5s price, and lowering the iPhone 5c cost by $16. Best Buy will get a run for its money, as Walmart now beats its lowest price on the iPhone 5s and 5c by a total of 31 bucks and $21 respectively.