Recent advances in IEEE 802.11 (Wi-Fi) standards have led to unprecedented opportunities for commercial success and low pricing in wireless networking. Wireless access points that are easy to setup, use, and maintain, have become a household commodity. Inspired by the added benefit of their operation in the unlicensed frequency band, many home and small business owners are installing these commodity access points to quickly set up a high speed local wireless network within their premises. As this trend continues to grow, we will soon end up with a wide coverage of independent commodity access...