I have one Macbook Pro with TouchID along with several other machines without it. I would desperately like to login to the Macs without TouchID via a biometric login, preferably touch. I’ve searched and have found solutions to login to websites with biometrics, but haven’t found anything that hooks into the macOS login screen itself.
I believe that the Mac’s security model precludes this. The secure enclave is used to store the data to check the fingerprint against. That requires integration with a T1, T2, or M1 chip, which by design is not available to external devices for this process.
@jeffpage if you have an iPhone or iPad, you can set up a Siri Shortcut (SSH Script), in conjunction with the app Keyboard Maestro.
With this you can unlock one or more iMacs/MacBooks.
Either with the spoken Siri Shortcut or a touch on your iOS device.