I hope you don't need to unlock your i5s on a rainy day outside. Another reason the finger print sensor on the 2011 Motorola Atrix 4G was a failure;
iPhone 5S fingerprint sensor is ill-disposed to sweat
The fingerprint scanner on Apple's new iPhone 5S is being heralded as the most innovative feature on the latest model of the company's smartphone. However, Apple has admitted that its "Touch ID" sensor isn't exactly perfect -- namely, it doesn't like sweaty fingers.
Company testers have discovered that the Touch ID sensor will not always respond to fingertips coated in sweat, lotion, or other liquids, an Apple spokesperson told The Wall Street Journal.
Besides fluids, the scanner also doesn't seem to like fingertips with scars. However, the company spokesperson told the Journal that this issue is easily solvable by using another finger on the scanner.
iPhone 5S fingerprint sensor is ill-disposed to sweat
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