Abstract: This disclosure is directed to a scanning device having a which has a tray set, a movable scanning module and an automatic document feeder. The tray set has a feeding tray and a first output tray. The movable scanning module is movable between a first position and a second position. The automatic document feeder has a flip path, a feeding path, an output path, a returnable path and a feeding wheel group. The feeding path is disposed corresponding to the first position and connecting with the feeding tray and the flip path. The output path is disposed corresponding to the second position and connecting with the first output tray. The returnable path has an intersection connecting with the flip path and the output path. The movable scanning module scans two sides of the sheet at the first position and the second position respectively.

Abstract: In a method for filtering messages being executed by at least one processor of electronic devices, the method includes detecting a message filtering template set by the first electronic device when the first electronic logs into the server successfully; sends a content of the message filtering template and a communication request from the first electronic device to the server; sends the content to the second electronic device by the server, the content of the message filtering template including functions of stop receiving messages from group members within a first certain period of time or refusing to send messages to one or more group members within a second certain period of time; and receiving a selection from the second electronic device through the server.