Because of the increasing use of smart devices, such situation is becoming popular which should have temporary group with 4-10 persons who is trusted each other and share the information in small working area. In such cases, there is strong demand for quicker generation of temporary group for information sharing at small period of time. In this paper, by using assumption of trusted-persons group, we will use collaboration between human ability of understandings and smart device sensors to certify that trusted-persons network. With this methodology we could reduce the cost of the total system and certification load of person and also we could satisfy the needs of quick information sharing.