The question, “Why is my password required to enable Touch ID on my Mac?” is common. Here’s the explanation. Your Mac requires your account password to enable Touch ID because Touch ID is treated as a convenience feature, not the master key. The password is required to: Confirm it’s really you before adding or re-enabling fingerprints. Unlock the security system that stores Touch ID data in the Mac’s Secure Enclave. Protect your data if someone has physical access to your Mac