Samsung has reportedly decided not to place the fingerprint sensor under the screen of the Galaxy Z Fold 4 and Flip 4.
That might seem like a downgrade compared to the regular Android smartphone experience. Android device makers have preferred fingerprint sensors to 3D face authentication, while Apple prefers the latter.
Foldable phones are more complex, as they offer users two experiences. Whether we’re looking at the Fold or Flip designs, each device has a main foldable display and a secondary cover screen on the outside. Where do you put the fingerprint sensor to serve users at all times?Galaxy Z Fold 4 fingerprint sensor placement
Then, there’s a case for placing the fingerprint sensor under the cover display of devices like the Fold. But that would make it largely inaccessible for use when the main screen is unfolded. After all, the fingerprint sensor doesn’t just let you unlock the phone. It also authenticates you inside apps while you’re using it.
Samsung has patents describing dual in-display fingerprint sensors for foldable phones like the Galaxy Z Fold 4. The sensors would sit both under the cover screen and under the foldable display. That way, users would have access to a fingerprint sensor no matter how they use a Fold handset.
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