Wikipedia
Navizon
Navizon, Inc. is a provider of location-based services and products. Navizon was an early developer of technology that makes it possible to determine the geographic position of a mobile device using as reference the location of cell phone towers and Wi-Fi-based wireless access points instead of GPS. Navizon also developed technology for locating mobile devices indoors with room and floor-level accuracy.
Navizon, initially known as Mexens Technology, was founded by a team from the Internet Protocol geolocation market. Its founder and CEO, Cyril Houri, was founder and CEO of Infosplit, a provider of IP address geolocation services started in 1999 that was acquired in 2004.