A communication device establishes a trusted relationship with one or more remote communication devices by capturing ambient information with both communication devices, which is sent to a comparison system that compares them. The ambient information is used as authorization information. Upon a satisfactory comparison of the ambient information captured by the communication devices, the communication device is notified and a trusted relationship may be established between it and the remote communication device. Once the trusted relationship has been established, a personal area network can be established between the communication devices.