Body Sensor Network (BSN) technology has gained significant interest in recent years from researchers both in academia and industry. With the development of innovative wearable/wireless/implantable biosensors, the applications for BSNs extend from in-vivo monitoring and intervention for healthcare, to fitness, life-style monitoring, sport and security. BSN 2012 will address the fast-growing BSN research and offer participants a unique forum to discuss the key issues and innovative solutions in current BSN research and its future applications. The conference features a number of invited lectures by leading academic researchers and industrial experts. It will also include showcases and demonstrations of the latest BSN developments.