Using confidential information to prepare a request and to suggest offers without revealing confidential information

1. A method of suggesting a vendor offer comprising:

registering an electronic transaction device;

receiving from the electronic transaction device transaction information for at least one transaction conducted via the transaction device through a portion of a plurality of vendor accounts;

receiving from the electronic transaction device and storing on a non-transient computer readable medium user information designated as confidential at a transaction service provider, wherein the confidential information comprises a plurality of user accounts, the received transactional information comprising a total, date, and vendor for the plurality of accounts, and personal information for the user;

retrieving over a network connecting the transaction service provider with a plurality of vendors associated with the plurality of vendor accounts transaction data for a portion of the plurality of vendor accounts;

comparing the received transaction information with the retrieved transaction data;

communicating certain stored user information selected by the user without identifying the user over a network with a plurality of vendors, wherein vendor information for at least one of the plurality of vendors is accessible by the transaction service provider from a database that includes service or product information for at least a portion of the plurality of vendors, and in response receiving one or more offers from at least one of the plurality of vendors;

suggesting a transaction for at least one of the one or more offers to the user based at least in part on the received user information; and

presenting the at least one suggested offer to the user.

2. The method of claim 1 , wherein presenting the at least one suggested offer to a user includes presenting the at least one suggested offer to a consumer performing a transaction through a point of sale system.

3. The method of claim 2 , wherein the consumer is performing the transaction via an electronic transaction device.

4. The method of claim 3 , further comprising receiving a request to perform a transaction for the suggested offer at the transaction service provider.

5. The method of claim 4 , further comprising in response to receiving the request, transferring by the transaction service provider an electronic representation of authentication-based trust established between the vendor and the transaction service provider to the electronic transaction device and an electronic representation of authentication-based trust established between the electronic transaction device and the transaction service provider to the vendor.

6. The method of claim 5 , further comprising securing a transaction for the accepted offer by the transaction service provider authenticating the transaction via a three-dimensional security protocol that comprises separate authentication protocols for each of the user, the electronic transaction device and the vendor.

7. The method of claim 2 , wherein the consumer is performing the transaction via a conventional plastic transaction card.

8. A method of suggesting a service institution offer comprising:

registering an electronic transaction device;

receiving from the electronic transaction device transaction information for at least one transaction conducted via the transaction device through a portion of a plurality of service institution accounts;

receiving from the electronic transaction device and storing on a non-transient computer readable medium user information designated as confidential at a transaction service provider, wherein the confidential information comprises a plurality of user accounts, the received transactional information comprising a total, date, and service institution for the plurality of accounts, and personal information for the user;

retrieving over a network connecting the transaction service provider with a plurality of service institutions associated with the plurality of service institution accounts transaction data for a portion of the plurality of vendor accounts;

comparing the received transaction information with the retrieved transaction data;

communicating certain stored user information selected by the user without identifying the user over a network with a plurality of service institutions, wherein service institution information for at least one of the plurality of service institutions is accessible by the transaction service provider from a database that includes service or product information for at least a portion of the plurality of service institutions and in response receiving one or more offers from at least one of the plurality of service institutions;

suggesting a transaction for at least one of the one or more offers to the user based at least in part on the received user information; and

presenting the at least one suggested offer to the user.

9. The method of claim 8 , wherein presenting the at least one suggested offer to a user includes presenting the at least one suggested offer to a consumer performing a transaction through a point of sale system.

10. The method of claim 9 , wherein the consumer is performing the transaction via an electronic transaction device.

11. The method of claim 10 , further comprising receiving a request to perform a transaction for the suggested offer at the transaction service provider.

12. The method of claim 11 , further comprising in response to receiving the request, transferring by the transaction service provider an electronic representation of authentication-based trust established between the service institution and the transaction service provider to the electronic transaction device and an electronic representation of authentication-based trust established between the electronic transaction device and the transaction service provider to the service institution.

13. The method of claim 12 , further comprising securing a transaction for the accepted offer by the transaction service provider authenticating the transaction via a three-dimensional security protocol that comprises separate authentication protocols for each of the user, the electronic transaction device and the vendor.

14. The method of claim 9 , wherein the consumer is performing the transaction via a conventional plastic transaction card.