I've installed Ubuntu 17.10 on the Xiaomi Notebook Ari 13'3 but I couldn't get the fingerprint function running for logon. The Fingerprint GUI sees no device at all. Maybe there are necessary drivers for the Xiaomi Fingerprint sensor?
Here's the output (partial) of lsusb:
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 004: ID 8087:0a2b Intel Corp.
Bus 001 Device 003: ID 04f3:0c1a Elan Microelectronics Corp.
Bus 001 Device 002: ID 04f2:b5a3 Chicony Electronics Co., Ltd
...