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Skyhook Wireless - Wi-Fi Location Sensing







Skyhook Wireless - Wi-Fi Location
Sensing

Skyhook Wireless - Wi-Fi Location
Sensing
06/22/2005 01:57 AM

diagram_client_400.jpgSkyhook is creating a concurrent positioning system that can be used in dense urban areas where GPS may not reach. Designed to use Wi-Fi access points to triangulate position, Skyhook is touting this tech as a system that can work alongside GPS systems in order to maintain constant location information in any situation. Thanks to the ubiquity of Wi-Fi, the system seems like a good idea and it can work with just about any 802.11 device, meaning your handhelds and laptops can become local positioning units without much trouble.

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Skyhook Wireless - Wi-Fi Location Sensing

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Speed Sensing Traffic Light


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Stoplight to punish suburban speeders / Pleasanton finds a way to slow impatient drivers: Fascinating — they've found a way to turn speeders into red light runners.

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It doesn't write a ticket. It immediately turns from green to yellow to red.

Via Metafilter.

Click here to comment on this entry


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David Pescovitz: Bioengineers at the University of Maryland are developing contact lenses that change color in response to changes in blood sugar. The approach would benefit diabetics who traditionally use skin prick tests to monitor their glucose levels. One of scientist Chris Geddes's prototypes requires the wearer to use a handheld device that flashes a blue light at the eye and measures the glow. From New Scientist:
Geddes' team is looking at several options for users. Rather than having the entire contact lens glow, tiny sensor spots could be placed around the contact lens. Those spots could monitor glucose, as well as sodium, cholesterol and potassium...

The group is also working on a contact lens that would change colour like a traffic light - from green to yellow to orange to red - enabling the wearer or an observer to determine a broader range of blood sugar level, from too low to too high.
Link


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Both phone will be available in February in a Japan near you.

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Quarterscope using wardriving databases, software-only approach to simulate GPS services: The CTIA (cell trade association) gave Quarterscope a runner-up award for its unique software-only solution, still in testing, which can identify a Wi-Fi-enabled device's location through a mapped database of wardrove access points. It's opportunistically connecting the GIS (geographic information system) style mapping of wardriving (with fixed coordinates obtained via GPS) with the indiscriminate beaconing of most access points--APs that aren't operating with a closed network setting. Quarterscope says they can pinpoint to within 20 meters, but there have to be active, open, and wardrove access points nearby. The company says in the Wi-Fi Planet article that it's plotting the locations of millions of APs, but I have to assume they're starting with existing databases. I've queried the company for an interview to get more information. But with that assumption, the product has an essential strength: it can initially rely on the GPS gathering thousands of others, instead of seeding its own transmitters or maps. Over time, they can gather more data points and have a model for when APs move--across town or to another country! Because it's software only, it means that you can run their eventual product without special hardware. The company says it's looking into working with a GPS partner in order to bring both the benefits together: Quarterscope will work well in urban areas where getting the three or four satellite signals for best GPS performance are difficult; GPS in rural areas where Wi-Fi is hard to find. [link via Smart Mobs]...

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This is something Mikel and Marc Eisenstadt will like.

The Art and Science of Location and Media.

Visual RadioI came across two interesting experiments involving location metadata and media today.
First, scientists Roberto Cipolla and Duncan Robertson at the University of Cambridge are building a system for inferring location from image content:

Roberto Cipolla and Duncan Robertson have developed a program that can match a photograph of a building to a database of images. The database contains a three-dimensional representation of the real-life street, so the software can work out where the user is standing to within one metre.

Their project is the inverse of the Mobile Media Metadata project, which aims to infer image content from contextual metadata (including location). It is interesting to consider how the technologies might work together: taking a picture of a building tells the system where you are (South Hall). Knowing where you are tells the system what you are doing there (attending class), from which it can infer who the people in the picture are (your classmates)…
Second, artists Pall Thayer, Sara Kolster, and Pete Gomes are playing with the concept of geocinema, using open-source tools to superimpose GPS coordinates on video on real-time. Cool, but how much more interesting would it be if they could:



  1. convert those coordinates to higher-level semantic location metadata ("the place I passed out last night"), and
  2. use that metadata not just for superimposing on the video but as input for determining the structure of the video narrative?

[unmediated]

Ekahau Announces Wi-Fi Location Tag


Ekahau Announces Wi-Fi Location Tag 06/04/2004 02:46 AM
Ekahau T101 Wi-Fi tag enables real-time people and asset tracking over standard Wi-Fi networks. [PRWEB Jun 4, 2004]

Location Still Matters With Internet PR


Location Still Matters With Internet PR 03/26/2005 05:41 AM
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Wardriving as a Proxy for Wi-Fi GPS
Location


Wardriving as a Proxy for Wi-Fi GPS
Location
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Quarterscope converts Wi-Fi cards plus a wardriving database into a virtual GPS receiver: A few weeks ago, Wi-Fi Networking News talked to Ted Morgan, the founder and president of Quarterscope, a company which had just won an award at the cellular industry's big trade show for location services, finishing behind well-established Ekahau. Quarterscope's product is software that uses a database of wardriving records that it matches against the signals received by a Wi-Fi radio to produce an approximate set of coordinates, like a virtual GPS. "What got us started down this path is the density of public and private hot spots," Morgan said. "No one realizes just how many of these access points has been installed. They see the sales numbers, but they don't extrapolate the fact that people are going home and plugging them in." Morgan said that they have primed the pump of their database using existing information from research groups, hobby wardrivers, and collective databases. "We're aggregating from lots of different existing sources today," he said. Wardriving uses "stumbling" software like NetStumbler to record all of the network names and unique access point hardware addresses at regular time slices, like every second, combining that information with GPS (Global Positioning Satellite) receiver coordinates tied into the same laptop or handheld. Quarterscope is starting its own stumbling efforts by installing wardriving devices on vehicles in metropolitan areas that drive random paths, such as delivery vans. "If you have somebody who is scanning for a full day, in metro areas, they can scan over 5,000 a day, particularly in downtown areas," Morgan said. Oddly, he said, certain kinds of vehicles don't work because they drive similar routes every day, such as police cars. "if you really look at what a cop does all day, it's pretty revealing." Morgan said that they've had legal advice as to whether passively scanning or pinging for a beacon violates any laws int he U.S. "We've gotten consultation on the whole process, and it’s very clearly within legal bounds," he said. "If we have any concerns, it's more on a perception side of things. You can go to the FBI Web site and they very clearly state that passive scanning is fine. The problem is if you connect into somebody’s network." Quarterscope's software generates a virtual serial port on a Windows system, and uses the NMEA GPS protocol. it works with a variety of mapping...
Grok Description matches for Skyhook Wireless - Wi-Fi Location Sensing
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Skyhook Wireless - Wi-Fi Location Sensing

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