Bootstrapping body sensor networks using human controlled LED-camera channels

Body sensor networks enable many interesting applications. In these applications, sensor networks always collect sensitive information, thus security is significant. Since most security mechanisms are based on identities and keys, we propose a human controlled LED-camera channel based hash key before knowledge identity and key distribution protocol. The protocol has two advantages. Firstly, the protocol uses human controlled LED-camera channels, thus human burden is reduced. Secondly, protocol performance is optimized for sensor nodes.