You need a password for a lot of online accounts ( webserver, network logins, etc.). Also, you should use a different password for each account, because if you would use only one password everywhere and someone gets this password, you would have a problem: the thief would have access to all of your accounts.
Global Key will help you manage all your account passwords in a secure way. Global Key stores information in a secure way but it also introduces and promotes a new strategy to manage all your accounts.
Instead of trying to remember everything for all your accounts, you create global password component that you will use as part of the password for every account.