How MacOS Sierra opens any source

1. Open application-utilities-terminal;

2. Copy the following code (note in red is two -) into the terminal, enter (input computer password):
sudo spctl –master-disable

3. Open application-System Preferences-security and privacy-general, any source of disappearance has finally appeared (by default it should be checked);

4. Install third-party software!

Of course, if you do not like to use the Terminal Input command to open any of the source options, you can also open a third-party application in another way: control and tap or right-click the app's icon, tap to open the "open" option, is not also very convenient? You can open a third-party app under MacOS Sierra by choosing both of these methods as you like.

How MacOS Sierra opens any source