Wednesday, November 26, 2008

Indoor Positioning using Wifi

SCYP LogoHave you ever wanted to pull up a floorplan on your mobile device to help you find your way?

Jorge Silva, our mobile lead here at the ATRC, and students Jamon Camisso, and Yura Zenevich gave a lunch talk the other day to show off the state of their Wifi based indoor positioning system. It seems they have managed to get within 5 meter accuracy using existing WiFi points and some nifty statistical algorithms. Jamon is looking at how this technology might tie into geolocation efforts such as Mozilla's Geode. We'll also look at connecting with efforts in GNOME, AEGIS and other projects. Exciting stuff.

Here's the quick upload of the talk in five parts. Captions are coming, and apologies for the lighting.

This work is done as part of the SCYP project and like many innovations is coming from an accessibility angle. I think this work provides a nice foundation for all kinds of student engagement here at the University of Toronto and elsewhere.

Thanks for reading.

11 comments:

Steve Lee said...

That's really interesting Dave and has some obvious potential in telecare/telemonitoring for older people

If you pop a note on the OATS list I'll pass it on to the Sheffield Uni guys who are working in that space (and who did the Maavis project)

Craig said...

Instead of integrating this really cool but complex and domain specific work into all these different projects, perhaps you could make it a provider for geoclue? http://geoclue.freedesktop.org Geoclue is being considered by webkit and will probably be in a near future Gnome version.

David Bolter said...

@candrews, thanks for the idea. I'll pass it on.

Improvedliving said...

well this is welcome addition. It is useful.




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Derek Lafortune said...

Thank you, quite an interesting article. WPS works on the principle of determining coordinates using Wi-Fi points that are capable of transmitting certain data. Using RSSI (Received Signal Strength Indicator) and MAC address (Media Access Control), the system can accurately calculate the current location of the user's device. The accuracy of calculations is affected by the number of access points. Depending on whether the device is connected to a Wi-Fi network or not, localization is affected by various restrictions. Due to randomly generated MAC addresses (MAC randomization), the smart device or the actual number of devices in the access area may not always be unambiguously determined. I read this information in a post on Instagram in which the authors talked about terms related to Wi-Fi, unfortunately I don't remember the name of his account, but I remembered for sure that about 30 thousand subscribers were subscribed to it! I am sure that in order to achieve such indicators, the owners of these accounts have resorted to using the services of buy instagram followers to quickly increase their number.