The modules in the processing engine 112 may be connected to or communicate with each other via a wired connection or a wireless connection. The wired connection may include a metal cable, an optical cable, a hybrid cable, or the like, or any combination thereof. The wireless connection may include a Local Area Network (LAN), a Wide Area Network (WAN), a Bluetooth, a ZigBee, a Near Field Communication (NFC), or the like, or any combination thereof. Two or more of the modules may be combined as a single module, and any one of the modules may be divided into two or more units. For example, the acquisition module 310 may be integrated in the determination module 320 as a single module which may both obtain information from the user terminal 130 and determine whether the condition for updating the sequence is satisfied based on the obtained information.
In step 410, COM ports 250 may establish network communications with a user terminal 130. The network communications may be a wired communication or a wireless communication. Exemplary wireless communication may include cellular communication, wireless local area network (WLAN), WiMAX communication, Bluetooth communication, etc.