Samsung admits: Any fingerprint can unlock Galaxy S10

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Until a patch comes, you could use Samsung's face unlocking, but that has had its own issues. For one United Kingdom couple using an low-priced "gel" screen protector (or case, it isn't immediately clear which), their cheap accessory compromised the phone's fingerprint recognition capabilities by allowing any finger to unlock the phone, eliminating the security offered by the in-display reader. The BBC reports that Samsung has acknowledged the issue and promised a software patch to fix the problem.

Samsung this week came under fire for leaving its Galaxy S10 line open to attack by way of its ultrasonic fingerprint sensor. Her husband was apparently able to do the same with his thumbs, and testing the screen protector on a relative's phone led to the same issue. But if you have a Samsung Galaxy S10, it is possible to unlock it with any fingerprint - all that's needed is a screen protector. But progress never sleeps, and Samsung is already hard at work on new tech for the Galaxy Fold 2. Initially, Samsung only advised users to use only Samsung's official screen protectors.

And when the screen protector was added to another relative's phone, the same thing happened.

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This "revolutionary" upgrade uses ultrasound to detect and match the fingerprint to the user.

Samsung advises that users should remove such covers and delete all previous fingerprints before registering their fingerprints on the device again. While the issue occurred with the Galaxy S10, it is also applicable for the Galaxy Note 10 since it also features the same ultrasonic fingerprint scanner.

What it doesn't explain is how can the sensor mistakenly recognize these patterns as your fingerprint in the first place.

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