Worked on the androidx/androidx repository to enhance secure input handling and keyboard source tracking within the Android text input foundation. Focused on distinguishing hardware and software keyboard inputs, the developer refactored input source detection and introduced dynamic password visibility modes to improve privacy and usability. Leveraging Kotlin and Android development skills, they implemented a new text obfuscation mode aligned with OS settings and enforced stricter linting rules to maintain code correctness. The work included targeted test coverage and addressed high-priority issues, resulting in improved password handling, accurate input attribution, and OS-aware obfuscation, all while preserving seamless user experience across input methods.