This paper describes a new framework of policy control sensor networks. Sensor networks ate shared by various applications, and have many nodes. Hence, sensor networks need to have ability to accept various applications, and to deploy application modules to nodes easily. Sensor nodes should have appropriate application modules. Afi.amework that is based on VPC on KODAM enables sensor nodes to have --qpropriate modules by assignment rules in a policy. When users only pur application policies to sensor neiworks, sensor nodes propagate the policies and perform appropriate roles in the applications. This paper also shows that sensor networks with policies change behavior corresponding to detected active W I D tags as an example.