研究人员跟踪用户，观察他们的行为，用摄像机，图像或者戴在用户身上的微型摄像机记录过程。通过影随发现和了解他们日常生活，探索设计机会，展示产品如何影响用户的行为。

Researchers track the user, watch their behavior, use the camera, image or micro camera installed in clients recording process Through shadowing we can discover and understand their daily lives, and explore the design opportunities, to show how the product influence user behavior.