How do I turn off Touch ID?

To turn it off, go to Apple menu > System Settings > Touch ID & Password.

It should work. It works well on my iMac 24". Note that it is designed not to work on first login after startup/restart.

Before turning it off you may want to try removing your fingerprint and adding it again to see if that helps. That can be done in the same System Setting as shown above.

Try hovering your cursor over Finger 2 and then Finger 1 and click the x that will appear just above the left side of each of those. Then restart your Mac.

It doesn't work for me even though I have disabled all options available. I keep being asked to use my finger to log in. So annoying when it won't recognize my fingers.