It is because he/she uses your finger to unlock your device while you are sleeping. Use a strong password to protect your device. Even Face lock is not stronger than password.
We welcome your suggestion and we appreciate the time and effort you have spent to share your valuable comments. This will help us to better our services. Any update in this regards will be conveyed to you via various means of communication. We would like to inform that face recognition is less secure than Pattern, PIN, or Password and your device could be unlocked by someone or something that looks like your image.
Be sure to hit ♡ when you find an answer that works for you. For further assistance, you can get in touch with us via Live Chat option by following- http://livechat.support.samsung.com/Customer_new/IN. You can also connect us via Samsung Members web community by following mentioned url-https://community.samsungmembers.com/en_IN#/
