If you need to know a saved wireless network password on a system running Apple's OS X operating system, e.g. a MacBook Pro, you can do find that information using the Keychain Access program found in
Applications/Utilities. To find the information using that utility, open it, then click on Edit then Find and search for the SSID for the wireless router or click on Passwords under Category in the left pane of the window and look for it in the list you will see. You can then double-click on a relevant entry to see the password/key. Alternatively, you can use the command line security program with the
find-generic-passwordoption to display the password.
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