may be placed within the accessory 100 by for example but not by way of limitation sliding 322 the token 300 into a slot 323 defining a cavity within the accessory housing 102 the accessory housing 102 retains the token 300 until the user actuates a hardware mechanism such as a latch not shown that retains the token 300 within the cavity within the accessory housing 102 alternatively the token 300 could be retained by an electromechanical latch not shown coupled to the power source 150 and the integrated processor 105 wherein the token could be released upon an execution of a command by the processor 105 for example but not by way of limitation if a user entered a valid authorization code into the touch screen interface 250 a the processor determines the code is valid and provides a command to the electromechanical latch to release the token from the accessory alternatively a drive element such as those that actuate compact disk player disk slots in portable cd players could eject the card through the slot 323 upon receiving a command to eject the card from the processor 105 in this implementation the accessory 100 includes an internal set of electromagnetic read and or write heads 450 which comprise one possible embodiment of the electrical data interface 145 as the token 300 is moved 322 into the cavity 323 the heads 450 traverse a significant portion of the length of the magnetic stripe 430 while in proximity to the surface of the magnetic stripe if the heads 450 are so enabled by the integrated processor 105 data may be.