A graphic symbol tells users where they need to press to provide a fingerprint
A flaw that means any fingerprint can unlock a Galaxy S10 phone has been acknowledged by Samsung.
It promised a software patch that would fix the problem.
The issue was spotted by a British woman whose husband was able to unlock her phone with his thumbprint just by adding a cheap screen protector.
When the S10 was launched, in March, Samsung described the fingerprint authentication system as "revolutionary".
