Nokia N-GAGE QD User Manual page 152

In the Certificate management main view, you can see a list of authority
certificates that have been stored in your game deck. Press to see a list
of personal certificates, if available.
Digital certificates should be used if you want to connect to an online bank
or another site or remote server for actions that involve transferring
confidential information, or want to reduce the risk of viruses or other
malicious software and be sure of the authenticity of software when
downloading and installing software.
The existence of a certificate does not offer any protection by itself; the
certificate manager must contain correct, authentic, or trusted certificates
for increased security to be available.
Certificate details and authenticity
You can only be sure of the correct identity of a WAP gateway or a server
when the signature and the period of validity of a gateway or server
certificate have been checked.
You will be notified on the game deck display if the identity of the server or
gateway is not authentic, or if you do not have the correct security certificate
in your game deck.
To check certificate details, scroll to a certificate, and select Options >
Certificate details. When you open certificate details, Certificate
management checks the validity of the certificate and one of the following
notes may appear:
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