Samsung Admits Major Security Flaw in Galaxy S10 Under-Screen Fingerprint Sensor

A major flaw in Samsung's Galaxy S10 smartphone has been discovered that basically means any fingerprint can unlock the device with the help of a cheap screen protector.

samsung galaxy s10 lineup 2019
According to the BBC, a British woman discovered the authentication flaw after she applied a cheap gel screen protector bought off eBay to her Galaxy S10.

She soon discovered that she was able to authenticate as the owner by pressing her left thumbprint against the phone's onscreen fingerprint sensor – the problem being that she hadn't registered her thumb with the device's biometric authenticaton system.

Her suspicions were confirmed when her husband was also able to unlock the phone by pressing either one of his thumbs on the screen's built-in sensor. The screen protector was then applied to another relative's Galaxy S10 and the same thing occurred.

Responding to the incident, Samsung said it was "aware of the case of S10's malfunctioning fingerprint recognition and will soon issue a software patch."

Previous reports have suggested that certain screen protectors are "incompatible" with Samsung's fingerprint sensor because they leave a small air gap that can interfere with the scanning. The sensor relies on ultrasound to detect the microscopic ridges that make every fingerprint unique.

The Galaxy S10 is the latest in Samsung's flagship S series, which is usually regarded as the iPhone's annual rival. The Korean company launched the phone in March and referred to its under-screen fingerprint authentication system as "revolutionary."

(Thanks, Chris!)

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Top Rated Comments

Darmok N Jalad Avatar
62 months ago
Maybe they will bring back the self destruct feature for added security.
Score: 54 Votes (Like | Disagree)
GadgetBen Avatar
62 months ago
Another rushed Samsung feature to market before it’s ready and properly tested.
Score: 53 Votes (Like | Disagree)
dan9700 Avatar
62 months ago
Do people really still think Samsung makes good phones, after the fold i can’t trust them
Score: 44 Votes (Like | Disagree)
coords Avatar
62 months ago
Hilarious!! First their pathetic atempt @ cloning FaceID & now this!! lol!!
Score: 43 Votes (Like | Disagree)
D.T. Avatar
62 months ago
Not so easy, is it? ;)
Score: 37 Votes (Like | Disagree)
guitarpanda Avatar
62 months ago
Can't wait for this thread to become yet another echo chamber full with people who prefer Touch ID to Face ID because having to put your finger in a certain place on the phone is somehow more convenient than having to do nothing.
Score: 37 Votes (Like | Disagree)