https://www.cnet.com/news/galaxy-s9s-take-on-animojis-look-good-but-dont-track-your-face-well/

We had some hands-on time with the Galaxy S9 to check out how it works, and while it's fun to create an emoji using your own face, the implementation is far from perfect. In fact, it kind of creeped us out. 

Take a selfie from within the app (but don't smile!), and watch the Galaxy S9 churn out a Bitmoji-style avatar of your face in less than a minute. From there, you can customize your avatar with skin tones, hairstyles, eyeware and various outfits.