Near Field Service Initiation via Vibration Channel

In this paper, we propose a Near Field Pairing Service system called NFV to enable group communication. This system leverages common mobile device, e.g., smartphones, equipped with motion sensors. A group of people can put their mobile devices on the table and setup a secure connection via a vibration-propagation based key delivery scheme. In this way, NFV is able to transmit a secure connection key among a group of trusted mobile devices. Based on this key, group users establish a confidential communication channel between their devices. NFV achieves group devices pairing without the complex operations needed in prior works. We implemented NFV using off-theshelf Android smartphones. The experimental results shows the efficiency and security of our system.