A cursor control device such as a mouse allows a user to quickly switch between screens in a multi-monitor computing environment. The method classifies the user to one of several different user types based on the user information and a correspondence relationship between the user information and risk levels, and selects an appropriate incentive mechanism for risk control based on the user type. One exemplary embodiment of a device includes a generally rectangular-shaped body having an implantable body retainer, an opening disposed a distance apart from the retainer and configured to receive a ligament graft therein, and a fold extending across the body and intersecting the opening. A seal, which surrounds the receiver connector completely, is made of a more elastic material than the receiver connector and the adapter and is fitted between the receiver connector and the adapter. These techniques allow a service gateway to bill separately for different requests and responses carried in TCP data packets, such as those for Hypertext Transfer Protocol and Real Time Streaming Protocol.