On a Mac you have always been able to do this easily by simple opening the Keychain app, double click on your network name, and after entering your computer's u

On a Mac you have always been able to do this easily by simple opening the Keychain app, double click on your network name, and after entering your computer's username and pass it reveals the wifi's password. You can do that for any wifi account you have previously connected to. Both this method and the terminal method require you to enter in the current users username and pass so no security issue here.