Security Gateway Desktop is designed to store your information securely on your Mac. The information is automatically synchronized in its encrypted form to all your devices through the Cloud, keeping each device up to date.
The first time you launch the application it will direct you to create a master password or PIN. You need to remember this password as it cannot be changed or retrieved later. Each time the application is launched thereafter, you will need to enter this master password or PIN. To lock the data simply close the window or quit the application.