A system includes at least one server and at least one host computer coupled to a communication network. A memory card wallet includes a content addressable memory that stores server identifiers, such as URLs, and user information associated with the resource provider, such as user identification numbers and passwords. The user inserts the memory card wallet into the host computer, and instead of entering user identifiers and passwords, the memory card wallet can provide such information to the server. When the user enters a server identifier that matches a server identifier stored in the content addressable memory, the memory card wallet provides the user information associated with the matched sever identifier.