Title: Designing a Secure and Resilient Distributed Smartphone Participant Data Collection System Show Chinese title

Title: 设计一个安全且具有弹性的分布式智能手机参与者数据收集系统

Abstract: Real-world health studies require continuous and secure data collection from mobile and wearable devices. We introduce MotionPI, a smartphone-based system designed to collect behavioral and health data through sensors and surveys with minimal interaction from participants. The system integrates passive data collection (such as GPS and wristband motion data) with Ecological Momentary Assessment (EMA) surveys, which can be triggered randomly or based on physical activity. MotionPI is designed to work under real-life constraints, including limited battery life, weak or intermittent cellular connection, and minimal user supervision. It stores data both locally and on a secure cloud server, with encrypted transmission and storage. It integrates through Bluetooth Low Energy (BLE) into wristband devices that store raw data and communicate motion summaries and trigger events. MotionPI demonstrates a practical solution for secure and scalable mobile data collection in cyber-physical health studies. Show Chinese abstract

Abstract: 现实世界中的健康研究需要从移动和可穿戴设备中持续安全地收集数据。 我们引入了MotionPI，这是一个基于智能手机的系统，旨在通过传感器和调查以最少的参与者互动来收集行为和健康数据。 该系统将被动数据收集（如GPS和手环运动数据）与生态瞬时评估（EMA）调查相结合，这些调查可以随机或根据身体活动触发。 MotionPI设计用于在现实生活约束下运行，包括有限的电池寿命、弱或间歇性的蜂窝连接以及最少的用户监督。 它既在本地又在安全的云服务器上存储数据，传输和存储均经过加密。 它通过蓝牙低能耗（BLE）集成到手环设备中，这些设备存储原始数据并通信运动摘要和触发事件。 MotionPI展示了在信息物理健康研究中安全且可扩展的移动数据收集的实际解决方案。