What is the Gatekeeper feature on OS X 10.12 Sierra and how do I bypass it?

Gatekeeper is a feature which was first introduced on the Apple OS X 10.8 Mountain Lion update but is still in use on the Apple OS X 10.12 Sierra update. It was put in place to help guard against possible 3rd party malicious software downloaded from the internet, the software must be signed and verified by Apple in order to be approved by Gatekeeper. Which you may encounter installing some of our products. 

In the event that you need to bypass Gatekeeper to install or re-install your product(s), you can do so by permanently (which we do not recommend) or temporarily disabling it on your system.

Permanently bypassing Gatekeeper (not recommended): 

Settings for Gatekeeper can be found in the following location:

System Preferences > Security & Privacy > General 

Once the Gateway feature has been located, you will notice only two settings can be accessed; 'App Store' and 'App Store and unidentified developers', to fully disable the Gatekeeper feature you will firstly need to close the System Preferences, followed by entering the following Terminal Command into the Terminal Window, to reveal the 'Anywhere' setting.

sudo spctl --master-disable

Now relaunch the System Preferences, and the 'Anywhere' setting should be revealed. By selecting the 'Anywhere' setting, the Gatekeepr feature will be disabled. 

This option can be undone by entering the following command into the Terminal Window. 

sudo spctl --master-enable

Temportarily bypassing Gatekeeper (recommended):

To temportarily disable the Gatekeeper feature, can simply be done by 'Right Clicking' or 'Control-Click' the app of which you wish to install, and select 'Open'.

This will prompt a warning message, as followed:

'[..] is from an unidentified developer. Are you sure you want to open it?'

However by clicking open again, this will allow the app to open, further meaning you can install the application.