1. The method can insure that transferred data is confidential and controllable. �÷������Ա�֤Ǩ�����ݵĻ����ԺͿɿ��ԡ�
2. Identity confidential, including: user identity secret, confidential location of the user, the user can not track of. ���ݻ����������û����ݻ��ܣ��û�λ�û��ܣ��û��IJ��ɸ����ԡ�
adj.
1. entrusted with private information and the confidence of another
2. (of information) given in confidence or in secret
3. denoting confidence or intimacy
4. the level of official classification for documents next above restricted and below secret; available
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