Administering a plurality of accounts for a client

A method of administering a plurality of accounts held by a client at a plurality of vendors, comprising:

• registering an electronic transaction device with a transaction service provider server comprising a non-transient computer readable medium;
• registering the plurality of accounts with the transaction service provider server;
• receiving from the electronic transaction device transaction data for at least one transaction conducted via the transaction device through a portion of the plurality of vendor accounts;
• receiving from at least one of the plurality of vendors transaction data for at least one transaction conducted via the transaction device through at least one of the vendor accounts;
• creating on the non-transient computer readable medium one or more databases of client information including the client's personal information, account information corresponding to one or more of the plurality of vendor accounts associated with the client, and transactional information corresponding to the at least one transaction conducted via the transaction device;
• comparing the received transaction data from the at least one of the plurality of vendors with the received transaction data from the electronic transaction device stored in the client database;
• designating as confidential a first portion of the one or more databases;
• designating as non-confidential a second portion of the one or more databases;
• providing the plurality of vendors access to the second portion of the one or more databases;
• maintaining as secure the first portion of the one or more databases with respect to the plurality of vendors;
• deriving selected information from information stored in the first portion of the one or more databases;
• providing a vendor from at least one of the plurality of vendors access to the selected information based on consent of the client.