BibTeX for a paper by David Kotz at Dartmouth College.
For more information about this paper, visit this web page:
https://kotz.cs.dartmouth.edu/research/pierson-snap/index.html

@InProceedings{pierson:snap,
  author =        {Timothy J. Pierson and Travis Peters and Ronald Peterson and David Kotz},
  title =         {{Proximity Detection with Single-Antenna IoT Devices}},
  booktitle =     {{Proceedings of the ACM International Conference on Mobile Computing and Networking (MobiCom)}},
  year =          2019,
  month =         {October},
  articleno =     21,
  numpages =      15,
  publisher =     {ACM},
  copyright =     {ACM},
  DOI =           {10.1145/3300061.3300120},
  URL =           {https://kotz.cs.dartmouth.edu/research/pierson-snap/index.html},
  abstract =      {Providing secure communications between wireless devices that encounter each other on an ad-hoc basis is a challenge that has not yet been fully addressed. In these cases, close physical proximity among devices that have never shared a secret key is sometimes used as a basis of trust; devices in close proximity are deemed trustworthy while more distant devices are viewed as potential adversaries. Because radio waves are invisible, however, a user may believe a wireless device is communicating with a nearby device when in fact the user's device is communicating with a distant adversary. Researchers have previously proposed methods for multi-antenna devices to ascertain physical proximity with other devices, but devices with a single antenna, such as those commonly used in the Internet of Things, cannot take advantage of these techniques. \par  We present theoretical and practical evaluation of a method called SNAP -- SiNgle Antenna Proximity -- that allows a single-antenna Wi-Fi device to quickly determine proximity with another Wi-Fi device. Our proximity detection technique leverages the repeating nature Wi-Fi's preamble and the behavior of a signal in a transmitting antenna's near-field region to detect proximity with high probability; SNAP never falsely declares proximity at ranges longer than 14 cm.},
}