knock

Install command: 
brew install --cask knock

Name: Knock

Unlock with AppleWatch

http://www.knocktounlock.com/

/api/cask/knock.json (JSON API)

Cask code on GitHub

Current version: 2.2.1

knock is built for Intel macOS and so requires Rosetta 2 to be installed.
You can install Rosetta 2 with:
    softwareupdate --install-rosetta --agree-to-license
Note that it is very difficult to remove Rosetta 2 once it is installed.

Analytics:

Installs (30 days)
knock 7
Installs (90 days)
knock 21
Installs (365 days)
knock 79
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