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This question already has an answer here:

I would like to use an external keyboard, mouse, monitor, etc and have my MacBook closed. The only issue is that I can no longer access the fingerprint scanner. Is there a way to use an external one? FYI, I have installed Unlox which is very useful but doesn't cover all cases where a fingerprint can be used.

Yes, I read the similar question but thought this one was different since that one referenced a 10-yr old Macbook that didn't have the Touchbar. And there are ways to solve the problem in that question.

marked as duplicate by user310476, fsb, nohillside Feb 8 at 6:23

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

  • In what specific cases do you want to use your fingerprint? It's unlikely that any external scanner will be able to do everything the built-in Touch ID can do, due its use of the secure enclave on the Mac's T2 chip. – calum_b Feb 7 at 17:53
  • My ideal case would be to unlock 1Password like you can with the Touchbar. Most other cases seemed to be solved by Unlox. – kidbrax Feb 8 at 18:17
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No, there's no external fingerprint reader that works like the built-in reader. The built-in reader is not communicating directly with macOS on the main CPU, instead it communicates with a seperate kernel (still Darwin) running on a secondary ARM CPU.

As there's no way to connect an external fingerprint reader to the secondary ARM CPU, it is simply not possible for 3rd parties to create something that works exactly like the built-in reader and offers the same functionality.

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