A method of operating a mobile phone telecommunications network is provided, comprising using at least one mobile switching center of the network to receive at least one message, and as a result to generate a mobile application part message, transmitting the MAP message from the MSC to at least one service control point of the network, and operating the SCP to process the MAP message. In various embodiments, control may include provision of one or more commands to the second mobile device using at least a persistent communication link between the first and second mobile devices. Near the slit, a power feeding coil coupled to an IC element for an HF-band RFID system is disposed. Thus, when output data neighboring source lines are identical, the current required for the buffer is reduced. Execution results of the executed registered callback function are then returned to the daemon. In some embodiments, methods of classifying a song are provided that include: receiving a selection of at least one seed song; receiving a label selection for at least one unlabeled song; training a support vector machine based on the at least one seed song and the label selection; and classifying a song using the support vector machine.