The next iPhone could feature both Face ID and a version of Touch ID using an optical fingerprint scanner built into the display.
Following many previous reports that Apple has been investigating under-display optical Touch ID, a new claim says that the feature is in testing. If correct, it backs up predictions that the technology will appear in the "iPhone 13."
One former employee previously worked on Touch ID and said that an optical version could be more reliable than the existing ultrasonic technique. However, this source also said that Apple would not adopt optical fingerprint sensing unless it proved to be as secure as the current Touch ID.