Motorola's Nexus 6 was originally scheduled to feature a fingerprint sensor where the dimple is located at the back, but the idea was ultimately foiled by Apple. Motorola was working on fingerprint recognition with a company called AuthenTec, with devices from as far back as 2011 featuring the technology. However, Apple acquired AuthenTec in 2012 for $356 million to use the technology in the Touch ID sensor, which meant that Motorola had to look elsewhere.
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