Abstract: A monitoring and entry system presence service provides notification about a trigger event to a user and performs actions based on user input. Interface devices equipped with client applications capable of performing actions such as VoIP calls, video calls, and the like, register with a control and session layer, which facilitates interaction with a specific presence application and an integrated presence service, such as a doorbell application and a generic presence service. Upon determining the location of a user, notification and a list of actions are provided through a watcher client application. In response to the user selection, actions are facilitated through the same network session(s).

Abstract: A method for forming a MOS transistor is provided. A gate oxide layer, a polysilicon layer, a barrier layer and a conductive layer are sequentially formed on a provided substrate. A photolithography and etching process is carried out to remove a portion of the conductive layer and a portion of the barrier layer until exposing the polysilicon layer. An ion implantation is performed to form lightly doped regions in the substrate using the remaining conductive layer and the remaining barrier layer as a mask. A spacer is formed on the side-wall of the conductive layer and on the side-wall of the barrier layer. The polysilicon layer and the gate oxide layer, which are in positions other than those of the remaining conductive layer and the spacer, are removed. The remaining conductive layer and the remaining polysilicon layer constitute a gate with an inversed, T-shaped cross-section.