That is Fast 
The ultrasonic fingerprint sensor of Galaxy S21 is 8×8=64mm, which is 1.77 times higher than the previous generation, and the unlocking speed is doubled. You don’t even need to press it, just tap to unlock.
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Wow thats an upgrade
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That's what I like to hear
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Swear?
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Does it work with glass screen protectors? Most glass screen protectors for the S20 has a hole drilled through the glass.
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Probably not since it's 3d ultrasonic
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How about the accuracy? Because the current implementation is already fast enough, just not as accurate
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I would assume a larger surface area means better accuracy.
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One of the most underrated features
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