@inproceedings{wang2014eyes,
  title={E-eyes: device-free location-oriented activity identification using fine-grained WiFi signatures},
  author={Wang, Yan and Liu, Jian and Chen, Yingying and Gruteser, Marco and Yang, Jie and Liu, Hongbo},
  booktitle={Proceedings of the 20th annual international conference on Mobile computing and networking},
  pages={617--628},
  year={2014},
  organization={ACM}
}