Included are embodiments for facilitating communication. At least one of the first and second write lines includes at least one first portion spanning the MRAM cell stack and at least one second portion proximate the MRAM cell stack. When the second computer authenticates to the first computer, the second computer transmits the credential and a first challenge to the first computer. The reference is constructed as a data structure of primary attributes and means of locating the media objects as instances of primary attributes. A case receives the above components. In operation, the application proxy receives a message to perform an activity which calls for the invocation of a service.