| 摘要 |
When a user makes a location specific request to a service provider, the user's request is intercepted by the network which generates a "user tag". The network stores user information in the tag, encodes it and transmits it to the service provider in a form which the service provider is unable to obtain the users identity. All of the data exchanges between the user and the service provider are routed through the network, using the user tag to identify the user. In this way, information identifying the user is never provided to the service provider who cannot therefore directly access the user. The user tag may have a predetermined short lifetime to provide further security. The lifetime of the user tag is extended if the user makes further requests relating to the same service, so that all requests relating to a service are dealt with by using one user tag.
|
