Download of FingerKey 2.0.6 for Mac was on the developer's website when we last checked. We cannot confirm if there is a free download of this app available.
Please check the Mac app with an antivirus before launch as it is downloaded from the developer's website, and we cannot ensure that it is safe. This free software for Mac OS X is an intellectual property of Leandro Luizari. The program lies within Security Tools, more precisely Personal Security.
From the developer:
FingerKey is an app that allows you to easily lock and unlock your computer using your phone's biometric authentication. The app can even detect your movements to either lock your computer as you leave or automatically request your fingerprint when you return. Also, it allows you to login to websites from your phone and it can backup and restore all of your passwords.
You may want to check out more Mac applications, such as PasswordVault Lite, which might be similar to FingerKey.