Open-source physical access (aka 'evil maid') attack detector
To manually install Do Not Disturb with Homebrew, use the following command:
Current version of #: 1.3.0
ARM: https://bitbucket.org/objective-see/deploy/downloads/DoNotDisturb_1.3.0.zip
Intel: https://bitbucket.org/objective-see/deploy/downloads/DoNotDisturb_1.3.0.zip