Abstract: A system and method for allowing customers to make purchases and take delivery of goods or services with a desired level of security and confidentiality are disclosed. The system and method enable a customer (user) to effect a purchase and a delivery of goods or services from a merchant without revealing selected real user data to the merchant. In one embodiment, the system includes a proxy user data generator for generating proxy user data corresponding with selected real user data, a database for storing the selected real user data and the corresponding proxy user data, and a purchase authorization request and reply router connectable to a network for routing purchase authorization requests and replies between a merchant and a purchase authorization entity. In another embodiment, the system includes a unit for providing real delivery data corresponding with proxy delivery data to a delivery entity.