With the prevalence of smartphones, mobile websites have been more and more popular. However, many mobile websites collect the location information which greatly increases users' risks of being tracked unexpectedly. The current location access control setting is not sufficient since it cannot prevent the service providers which have been granted location-access permissions from tracking the users. In this paper, we propose a novel location privacy preservation mobile app, called MoveWithMe, which automatically generates decoy queries to hide the real users' locations and intentions when they are using location-based mobile services. Unlike the existing works on dummy trajectories which may be easily discovered by attackers through data analysis, the uniqueness of the MoveWithMe app is that our generated decoys closely behave like real humans. Each decoy in our system has its own moving patterns, daily schedules, and social behaviors, which ensures its movements to be semantically different from the real user's trace and satisfying geographic constraints. Thus, our decoys can hardly be distinguished even by advanced data mining techniques. Another advantage of the MoveWithMe app is that it guarantees the same level of user experience without affecting the response time or introducing extra control burdens. Decoys move independently in the back end and automatically submit queries to the same service provider whenever the user does so. Our proposed MoveWithMe app has both iOS and Android versions and has been tested on different brands of smartphones against various location-based services, such as Yelp and TripAdvisor. Experimental results demonstrate its practicality, effectiveness, and efficiency.

中文翻译：

---

MoveWithMe：智能手机用户的位置隐私保护


随着智能手机的普及，移动网站越来越受欢迎。然而，许多移动网站都会收集位置信息，这大大增加了用户被意外跟踪的风险。当前的位置访问控制设置还不够，因为它无法阻止已被授予位置访问权限的服务提供商跟踪用户。在本文中，我们提出了一种新颖的位置隐私保护移动应用程序，称为 MoveWithMe，当用户使用基于位置的移动服务时，它会自动生成诱饵查询来隐藏真实用户的位置和意图。与攻击者通过数据分析很容易发现的现有虚拟轨迹研究不同，MoveWithMe 应用程序的独特之处在于我们生成的诱饵的行为与真人非常相似。我们系统中的每个诱饵都有自己的移动模式、日程安排和社交行为，这确保了其移动在语义上与真实用户的轨迹不同，并满足地理限制。因此，即使通过先进的数据挖掘技术也很难区分我们的诱饵。 MoveWithMe应用程序的另一个优点是，它可以保证相同水平的用户体验，而不会影响响应时间或引入额外的控制负担。诱饵在后端独立移动，并在用户这样做时自动向同一服务提供商提交查询。我们提出的 MoveWithMe 应用程序有 iOS 和 Android 版本，并且已经在不同品牌的智能手机上针对各种基于位置的服务（例如 Yelp 和 TripAdvisor）进行了测试。实验结果证明了其实用性、有效性和效率。