Browsed by
Month: July 2009

Downtown Denver Wi-Fi Survey

Downtown Denver Wi-Fi Survey

On July 27th, we carried out a thorough scan of 802.11 networks in downtown Denver. A Columbus V-900 tracking device was used to log location and path, validating that all streets and alleys were traversed. Meanwhile, an iPhone 3G and Wififofum were used to detect and log detected networks, their location, and attributes. The area bounded by Speer Blvd to the SW, Broadway to the East, and 20th Avenue to the NE were covered. Total area traversed was approximately 1.4…

Read More Read More

Comprehensive Wi-Fi Network Discovery

Comprehensive Wi-Fi Network Discovery

Introduction Since Pete Shipley first pioneered wardriving in the San Franciso-Bay area, many people have cataloged the locations of 802.11 networks around the world. I still remember the excitement, in the early days, driving the streets of downtown with a makeshift antenna, Orinoco ‘Gold’ card, and the soft glow of a Thinkpad 600x illuminating the passenger seat. You could often drive several miles before the faint signal of a distant access point would flicker across the screen. Much has changed…

Read More Read More

Financial Crisis – “Black Swan”?

Financial Crisis – “Black Swan”?

The financial market meltdown has caused many to re-evaluate their models for expected market returns. In reality, though, the recent market swings are not out of the ordinary in terms of what has been observed in the past. They are still within the fringes of the ‘long tail’ of the distribution of daily market returns. If there is an unpredictable and high impact event, waiting to spring on the market and challenge the perception of normal or ‘expected’, the “dot-com”…

Read More Read More