Terros is an application for both field surveys and land mapping; it is therefore particularly suitable for fields such as agriculture, where it is necessary to collect data on farmers, but also to map their plots. Special advantages of Terros: * Perform mapping either with a Bluetooth GPS device or with the GPS of the mobile device (smartphone and tablet). * Export coordinate files (GPX, KML, etc.) from both mobile and web. * View the mappings made both from the web and mobile.