To operate this function, a fingerprint recognition sensor needs to be placed on the back of a display panel. (english.etnews.com)
The display will have thin bezels, 18:9 aspect ratio along with the notch at the front which is equipped with a facial recognition sensor for the face unlock feature (obviously!). (onphones.com)
The only design element that sticks out on the front is the camera notch, and it's interesting to note that the device lacks a visible fingerprint recognition sensor. (androidheadlines.com)