Guest user accounts allow other people to use your Mac temporarily without knowing your main user account password. This is good for Hidden’s cause as it will encourage any thief in possession of your laptop to access the internet and allow Hidden to transmit data back to your Tracking Control Panel.
Guests don’t need a password to log in. While logged in, they can’t change user settings or computer settings. Additionally, any files created by a guest are stored in a temporary folder which is deleted when the guest logs out.
Open System Preferences and navigate to Users & Groups.
Click the lock icon in the bottom left hand corner in order to be able to make changes (if required).
Highlight the ‘Guest User’ account from the ‘Other Users’ list and tick the box next to ‘Allow guests to log in to this computer’.
A firmware password is a layer of security that is set on the actual Mac logic board's firmware, rather than at the software ‘user’ layer. This means that a firmware protected Mac cannot be booted from an external boot volume or into single user mode without logging in through the firmware password first. This prevents a wide variety of methods that could be used to compromise a stolen Mac, such as reformatting the hard drive from an external device (effectively disabling Hidden).
In order to activate a firmware password, go through the following process:
Reboot the Mac whilst holding down Command + R. This will boot directly into Recovery Mode.
At the OS X Utilities splash screen, click on the ‘Utilities’ menu bar and choose ‘Firmware Password Utility’.
Click ‘Turn On Firmware Password’.
Enter the password twice to confirm, then click ‘Set Password’. IMPORTANT: Do not forget this password or you may lose access to the Mac.
Choose ‘Quit Firmware Password Utility’ to set the firmware password.