The new Samsung Galaxy S10 smartphones come with a Face Unlock feature as well as a built in fingerprint scanner.
If you are using Face Unlock on your new Galaxy S10 smartphone then you will want to watch the video below from Unbox Therapy which shows how easy it is to fool the Face Unlock feature.
As we can see from the video it was pretty easy to unlock the Galaxy S10 with just a picture or video of someones face.
This feature is obviously not very secure and it may be better to use the fingerprint scanner on your device instead of the Face Unlock.
Source Unbox Therapy