1. A method for updating a transactional device on a conventional bank card transaction processing network, comprising: receiving an instruction at the transactional device from a command token to retrieve update information to update an operational encryption characteristic of the transactional device; generating transaction data that includes the instruction and a code identifying the transaction data as a command request for causing the transactional device to be updated; formatting the transaction data into formatted transaction data, wherein the formatted transaction data has the same format as bank card transaction data on a conventional bank card transaction processing network; transmitting, with identification information of the transactional device, the formatted transaction data across the conventional bank card transaction processing network to a remote device for execution of the instruction, wherein the execution of the instruction results in obtaining the update information, implementing a configuration change in the remote device; transmitting the update information to the transactional device, wherein the code is packaged in a field of the formatted transaction data; receiving the update information at the transactional device; and updating the operational encryption characteristic of the transactional device.