A computer receives a global command from a communication device using a first communication mode associated with a transaction. The computer stores transaction data, wherein the transaction data is stored for at most a duration of a session life span (SLS) time interval that is predefined. The computer sends a transfer session identifier (TSI) key to the communication device using the first communication mode. The computer receives the TSI key from the first communication device or a second communication device, using at least a second communication mode. The computer associates the transaction data with at least the second communication mode and the first communication mode in parallel, and the computer performs the transaction by use of either or both of the first communication mode and at least the second communication mode, within the SLS time interval that is pre-defined.