uSD Card: a plug&play solution for mobile device to access wireless sensor networks

The rapid development of wireless sensor network applications and mobile devices has brought the need for a universal plug & play solution to access wireless sensors and sensor network on the go. By reusing the legacy SD memory card slot built in mobile devices, we have developed a platform-independent method to extend low power short range connectivity for mobile devices, namely, universal Sensor Data (uSD) card. The paper gives a comprehensive description to hardware and software design for uSD card, and provides some examples on implementing mobile sink function on mobile devices.