They're also thinner than optical sensors and would be a better fit for the slim design tolerances Apple demands. Ultrasonic sensors come with the advantage of being more accurate, reliable, and secure. Whereas an optical sensor illuminates your fingerprint from underneath the screen and matches it with fingerprint images stored on the device, an ultrasonic sensor uses high frequency sound waves to trace your fingerprint's grooves and identify it.
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The analyst claims Apple's Touch ID could be based on Qualcomm's "3D Sonic Sensor" in-display fingerprint reader the chipmaker introduced with the Snapdragon 855.Īs we previously noted, an ultrasonic sensor works differently compared to the optical in-display fingerprint readers found on many Android phones such as the OnePlus 7 Pro. Kuo believes Apple will solve many of these technical challenges within the next 18 months thanks to new innovations and previously unavailable technology. "Power consumption, size of the sensing area, thickness of the sensing module, and the production yield rate of the lamination process," are cited by 9to5Mac as hurdles Apple hopes to clear with its new in-display Touch ID solution. There are still challenges for Apple to overcome. Considering how crappy many in-display fingerprint sensors on Android phones are, Apple probably made the right call. Prior to the release of the iPhone X, Apple was rumored to be working on an in-display fingerprint reader for iPhones, but scrapped it due to poor responsiveness and reliability. The 2021 iPhones won't drop Face ID for the new in-screen fingerprint sensor, though - they'll coexist on the same device.
One of the most well-sourced Apple analysts, TF Securities' Ming-Chi Kuo, says in his latest investor's note (via 9to5Mac) that Apple will reportedly release iPhones with a new in-display version of Touch ID in 2021. The iPhone X boldly killed Touch ID and replaced it with Face ID, but fear not: Apple might bring the beloved fingerprint sensor back.
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