| 摘要 |
When a calling party of a service provision system 100 wishes to call a user terminal 140-144, the calling party’s agent terminal 110 initially transmits a user identifier associated with the called party 140-144 to a trust establishment service 150, which then retrieves an associated stored token from a trust database 170 and transmits it to the called party in order to establish the called party's trust of the calling party. Once the token has been transmitted to the called party, the called party is connected with the calling party in order to effect the required service. The stored token may be an audio sample of a spoken word or expression which was recorded or selected by the user prior to the service-provision telephone call, hence the called party may establish trust with the calling party by recognising the stored token. Once trust has been established the method allows further processing of the call (which may relate to personal and/or sensitive information such as banking or credit card transactions) to be conducted. |
