The Radio Pill was a concept for a “smart” pill that opens, expands and lodges itself in the stomach for extended periods of time. During its residence, the device transmits real-time sensor measurements via Bluetooth. After a set period in the stomach, structural elements on the device dissolve, allowing the device to break up and pass safely out of the body. Our team was able to successfully integrate most of the above features and tested multiple devices in pigs. The project was a collaboration between researchers at Draper and the Langer Lab at MIT. Our efforts served as the groundwork for a later 3D printed version of the device which was published in an Advanced Materials article (see Y. Kong paper, below).