Google Will Patch The Flaw In Pixel 4's Face Unlock, But Not Now
Dhir Acharya - Oct 22, 2019
Pixel 4's face unlock works even with a person’s closed eyes, posing security issues. Google says that it will patch the flaw within the next few months.
- Google Offers Voluntary Buyouts to US Employees Amid AI Push
- Google SynthID: Everything You Need to Know About AI Content Detection
- NotebookLM Mobile App: Enterprise AI Capabilities Now Available on iOS and Android
For Google Pixel 4, the search giant has replaced the fingerprint sensor with the secure face unlock feature with a complex infrared 3D dot projector, similar to that on the iPhone. But the difference is that the system on the Pixel 4 works even with a person’s closed eyes, posing security issues. And the company now says that it will patch the flaw within the next few months.

Since the face unlock feature works even if a person’s eyes are closed, bad people can abuse this to access your phone easily just by holding the device up to your face as you’re sleeping, or worse, dead. Such an incident is the reason why Apple’s FaceID offers a toggle for “Require Attention for Face ID” to add another security level, forcing users to really look at the phone before gaining access.
When Google launched its Pixel 4 last week, it wasn’t clear if a similar feature would come to the phone’s face unlock. While some reports claimed the inclusion of an attention-check feature, others said the opposite.
![]()
According to a representative of Google, as Gizmodo reached out for further info, the company has been working to create an option where users will be required to keep their eyes open while unlocking the phone. The representative said that this change will roll out in a software update within the next few months.
For now, Pixel 4 owners can try unlocking the phone with their eyes closed as well as activate another security feature requiring a password, PIN, or pattern for unlocking the handset. Previously, the secure face unlock feature on the Pixel 4 was desired as it’s a strong biometric, meeting the security requirement for use in app authentication and payments. It works against invalid unlock attempts through other means, a mask for example.

Right now, there isn’t an exact timetable for the update timeline, but it may come by year-end. During the wait, if you want to secure your Pixel 4 as you sleep, you have the option to turn on the Lockdown feature by visiting the setting menus, open Display, then tap on Advanced, then select Lock Screen Display and toggle on “Show lockdown option.”
Featured Stories
Mobile - Oct 23, 2025
How Casual Games Are Winning the Mobile Attention War
Mobile - Jul 03, 2025
OPPO Reno 14 Series Hits India: Launch Date, Cameras, and Specs
Mobile - Jun 12, 2025
Best Gaming Phones 2025: Top Devices for Mobile Gaming
Mobile - Jun 12, 2025
Vivo T4 Ultra Debuts with MediaTek Dimensity 9300+ Chipset
Mobile - Jun 08, 2025
Realme GT 7T Review: Power Meets Endurance in Controversial Style
Mobile - Jun 08, 2025
Motorola Edge 60 Set to Debut in India This June
Mobile - Jun 07, 2025
Realme C73 5G Launches in India: Budget 5G Phone Starts at ₹10,499
Gadgets - Jun 07, 2025
OnePlus 13s Makes Indian Debut: Compact Flagship Brings Premium Features at...
Mobile - Jun 04, 2025
Samsung Galaxy Z Fold 7 Ultra: The Next Chapter of Premium Foldables
Mobile - Jun 02, 2025
Comments
Sort by Newest | Popular