If you want disable the finger sensor on Redmin Note 4 or note 4X you can do the following:
- with root explorer or in file manager of TWRP go to the folder called /system/lib64/hw/
- remove the files
fingerprint.goodix.so
fingerprint.searchf.so
gxfingerprint.default.so - reboot.
That’s it. Now the finger sensor is disabled.