Google has quietly added screen-off fingerprint scanning to the Pixel 9a, a feature previously limited to its flagship Pixel 9 and Pixel 10 series. Reddit users report the capability appeared with the March update, allowing users to unlock their phones without waking the display. The feature works by detecting the fingerprint sensor when the screen is off, eliminating the need to first activate the display before authentication.

This update brings mid-range Pixel devices closer to flagship functionality, as the Pixel 9a now matches the convenience of Google's premium phones. Users must position their finger roughly where the sensor would normally be indicated on-screen. While not revolutionary, the feature streamlines the unlocking process for those who prefer a more seamless experience. The addition suggests Google is expanding its biometric features across its product lineup.

However, the March update has caused issues for some users, with reports of AOD freezing and problems with Pixel Watch health tracking. One user claimed they lost the feature on their Pixel 7 Pro after updating, though Google hasn't acknowledged removing support. The screen-off fingerprint scanning capability was initially tested on Pixel 9 series devices before broader rollout, demonstrating Google's gradual approach to feature deployment across its smartphone ecosystem.