A new update to the latest version of MIUI may expand the function of the under-display fingerprint sensor found in the latest Xiaomi flagships. It involves activating an array of app shortcuts when this module is used. The new feature will be found in the Mi 9, 9 SE and some versions of the Mi 8.
https://www.notebookcheck.net/The-latest-MIUI-update-will-bring-fingerprint-unlock-shortcuts-to-the-Mi-9-9-SE.413750.0.html