Abstract: The device and its methods, and how the invention's purpose is to input for electronic contracts using a communications network will be introduced. The present invention uses a communications network as a medium and proves contract application from the service server. When the received contract application is activated, a control medium is used to synchronize the terminals of involved electronic contract parties via the terminal set synchronization code. When the terminals are synchronized, display of notification icons to let the other involved party know of input fields within the electronic contract.