You save an externally storable copy of the security key when the security key is first created and each time it is changed. You can create additional storable copies at any time. To save a new copy of the security key, you must provide a pass phrase. The pass phrase that you choose does not need to match the pass phrase that was used when the security key was created or last changed. The pass phrase is applied to the particular copy of the security key that you are saving.
Keep these guidelines in mind when you create a pass phrase: