When the Pixel 4 ships this week, it will be releasing to consumers with a face-unlock security issue that will apparently stick around for some time. Unlike the iPhone's FaceID (and Google's earlier face-unlock system on Android 4.1) the Pixel 4's face unlock doesn't look for the user's eyes, so the phone could be pointed at a sleeping or unconscious owner and unlocked without their consent. This weekend, Google said in a statement that a fix "will be delivered in a software update in the coming months."
The Pixel 4 was announced last week, and instead of including a fingerprint reader like most Android phones do, the Pixel 4 features Google's newly developed face-unlock system as the only biometric option. Google is clearly chasing the iPhone here, and the Pixel 4's face unlock works just like Apple's Face ID system: an IR dot projector blasts a grid of invisible dots onto the user's face, and a camera (a pair of cameras, in the case of the Pixel 4) reads the user's face in 3D.
As part of the many pre-release Pixel 4 leaks, screenshots of pre-release builds of the Pixel 4's software showed an option to "require eyes to be open." So we know Google hasn't been completely blindsided by this problem; the fix just wasn't ready in time for launch. Here's Google's full statement on the issue:
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