This is the Reader on my laptop:
Bus 003 Device 003: ID 04f3:0c4c Elan Microelectronics Corp. ELAN:ARM-M4
And I can't find an step by step way to make it work on Ubuntu.
In Fingerprint Activation on Ubuntu 18.04, they talk about iafilatov's libfprint for a ELAN reader on a HP laptop, but don't specify exactly what to do for a regular user (and not an IT professional) such as me.
So I couldn't really make it work, since I couldn't understand what to do and there is no option on Settings to enable or disable it.