After Made by Google 2019, it quickly became apparent that face unlocking on Pixel 4 and Pixel 4 XL will not detect if your eyes are open. Days before the flagship launches, Google confirmed that eye detection will come in a future update.
Pixel 4's current inability to detect if your eyes are open makes it trivially easy for someone to – hypothetically – pick up the phone for a sleeping person. Compared to fingerprint unlocking, there is absolutely no physical contact required to open your phone, access information or accept payments. The company's official guidance is to "keep your phone in a safe place", but this is not always possible.
Google confirmed tonight to The Verge that it "has been working on an option for users to require their eyes to be open to unlock the phone." It's strange that the Pixel 4 face unlocks up "eyes open" preference today on Pixel 3 by searching for settings for "eyes. "
Open eyes looking at screen
To unlock the phone, you always have to look at the screen with eyes open
This eye detection option will officially "be delivered in a software update in the coming months." Given the longer cited timeframe, the preference will definitely not be available when it is sent, and will likely miss the November security update in two weeks. It is unclear if it will be ready in time for the December fix.
Google at the root tried much faster face locking by integrating Motion Sense to start the process when you reach your phone. There is an inherent trade-off between speed and absolute security in the implementation of Pixel 4.
For those affected, Google recommends that you use "lockdown" to disable face locking until a pin or password is specified. It can be enabled from Settings> Display> Lock Screen Display> "Show Locking Options." It will appear in the power menu when you long press the lock button.
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