You may already know how to enable Touch ID for sudo already, but it’s constantly getting disabled after each update of macOS. This one-liner is a no-brainer to enable it again. Basically, type it once in your terminal, and type ‘^R pam.d ENTER’ to enable it again once needed and it will be enabled again.

sudo sed -i '' '2i\
auth       sufficient     pam_tid.so
' /etc/pam.d/sudo