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.
Navizon's database of cellular tower and Wi-Fi access point locations was built by a global community of users through crowdsourcing.
7,397,424 for its “System and Method for Enabling Continuous Geographic Location Estimation for Wireless Computing Devices”.