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Today the U.S. Patent and Trademark Office officially granted Apple a patent that relates to improving the accuracy of ultrasonic touch sensing and fingerprint imaging on buttons like the iPad Air's Touch ID on the top button as shown in our cover graphic. While the execution of ultrasonic fingerprint imaging on the iPad Air's top button looks simple enough to consumers, the technicalities behind this feature is quite steep.

Today the U.S. Patent and Trademark Office officially granted Apple a patent that relates to a future Apple Watch with an all-new modular sensing system that could combine Touch ID and ECG input. The proposed Apple Watch modular sensing system closely resembles the Touch ID sensor found on Apple's iPad Air.