Mexens Technology today released Navizon, a virtual GPS (Global Positioning System) for Apple's iPhone that uses Wi-Fi and cellular tower triangulation to show an iPhone owner their current location. The software adds a "Locate Me" button that allows iPhone users to see their position on a map and get directions to another destination, providing nearly the same functionality that other cellular phones offer with built-in GPS chips, according to the company. Navizon is utilizes a collaborative database where users can contribute wireless beacons' locations that let other members simulate a virtual GPS on their devices. Navizon is also available for Mac OS X and Microsoft Windows, as well as several other mobile platforms. The service is available for $25 and requires that Java is installed on the destination system.