Samsung also noted that the Galaxy Note 10, Galaxy Note 10+, Galaxy S10, Galaxy S10+, and Galaxy S10 5G users who applied third-party silicone should remove them and delete all previous fingerprints and newly register their fingerprints. A British user had earlier this week reported the issue to the Sun newspaper and said that it caused her Samsung Galaxy S10 to unlock the screen for her husband, who didn't have his biometric data stored in the system. The company had acknowledged the issue and assured the fix through a software patch.
Source : Gadgets360