Rasmussen, and Noel Gordon and Stephen Ma, at Sydney-based Where 2 Technologies. It was first designed to be separately downloaded by users, but the company later pitched the idea for a purely Web-based product to Google management, changing the method of distribution. In October 2004, the company was acquired by Google Inc. where it transformed into the web application Google Maps. In the same month, Google acquired Keyhole, a geospatial data visualization company (with investment from the CIA), whose marquee application suite, Earth Viewer, emerged as the highly successful Google Earth application in 2005 while other aspects of its core technology were integrated into Google Maps. In September 2004, Google acquired ZipDash, a company that provided realtime traffic analysis. 2005–2010 The launch of Google Maps was first announced on the Google Blog on February 8, 2005. In September 2005, in the aftermath of Hurricane Katrina, Google Maps quickly updated its satellite imagery of New Orleans to allow users to view the extent of the flooding in various parts of that city. As of 2007, Google Maps is equipped with a miniature view with a draggable rectangle that denotes the area shown in the main viewport, and "Info windows" for previewing details about locations on maps. On November 28, 2007, Google Maps for Mobile 2.0 was released. It featured a beta version of a "My Location" feature, which uses the GPS / Assisted GPS location of the mobile device, if available, supplemented by determining the nearest wireless networks and cell sites. The software looks up the location of the cell site using a database of known wireless networks and sites. By triangulating the different signal strengths from cell transmitters and then using their location property (retrieved from the database), My Location determines the user's current location. On September 23, 2008, coinciding with the announcement of the first commercial Android device, Google announced that a Google Maps app had been released for its Android operating system. In October 2009, Google replaced Tele Atlas as their primary supplier of geospatial data in the US version of Maps and used their own data. 2011–2015 On April 19, 2011, Map Maker was added to the American version of Google Maps, allowing any viewer to edit and add changes to Google Maps. This provides Google with local map updates almost in real-time instead of waiting for digital map data companies to release more infrequent updates. On