@misc{s2020based,
  title={An IoT based Active Building Surveillance System using Raspberry Pi and NodeMCU},
  author={Sruthy. S and S. Yamuna and Sudhish N. George},
  year={2020},
  eprint={2001.11340},
  archivePrefix={arXiv},
  primaryClass={eess.SP},
  url={https://arxiv.org/abs/2001.11340}
}