MIT scientists have developed a revolutionary pill capsule sensor that could transform the way doctors track missed doses. This innovative technology, designed to fit inside existing pill capsules, uses radio frequency to confirm within minutes that the pill has been swallowed. The capsule then largely dissolves in the stomach, with a tiny radio frequency chip passing through the digestive tract and exiting the body. The goal is to ensure patients receive the necessary therapy to maximize their health, addressing a persistent public health problem known as medication nonadherence. People miss doses for various reasons, from forgetfulness to side effects and mental health barriers. This new system aims to confirm ingestion without altering the drug itself, offering a potential solution for high-stakes therapies like transplant care, HIV, tuberculosis, and heart conditions. Early tests show the signal can be read outside the body, paving the way for a wearable receiver that could monitor and support patients in real-world settings. The research also has practical implications for clinical trials and the development of biodegradable electronics.