Geo-fencing: Confining Wi-Fi Coverage to Physical Boundaries

@inproceedings{2009-Sheth-pervasive,
    author = "Sheth, Anmol and Seshan, Srinivasan and Wetherall, David",
    title = "Geo-fencing: Confining Wi-Fi Coverage to Physical Boundaries",
    booktitle = "International Conference on Pervasive Computing",
    month = "May",
    year = "2009",
    isbn = "978-3-642-01515-1",
    pages = "274--290",
    category = "Privacy",
    address = "Nara, Japan",
    doi = "http://dx.doi.org/10.1007/978-3-642-01516-8\_19",
    publisher = "Springer-Verlag",
    abstract = "We present a means of containing Wi-Fi coverage to physical boundaries that are meaningful to users. We call it geo-fencing. Our approach is based on directional antennas, and our motivation is to provide wireless access and privacy models that are a natural fit with user expectations. To evaluate geo-fencing, we use measurements from an indoor testbed of Wi-Fi nodes and APs with electronically-steerable directional antennas. We find that by combining directionality, power control and coding across multiple APs, we are able to successfully confine Wi-Fi coverage to clients located within target regions of varying shapes and sizes; we can select between nodes located as close as five feet from each other.",
    summary = "How to use multiple directional antennas to limit packet reception to a specified region"
}