Android 16 introduces a new security feature called Advanced Protection Mode, which disables USB data access when the phone is locked. This optional feature aims to prevent unauthorized access to data through USB devices, protecting against attacks like brute force or payload injections. It blocks new USB peripherals until the device is unlocked and reinserted, enhancing security for users at risk, such as journalists or activists. The feature builds upon previous security measures, offering both hardware and software-level controls to disable USB data signaling.