However, the real significance of ICT for the SDGs is in helping to realise other targets. Digital technologies can contribute to the achievement of the SDGs related to infrastructure development (Goal 9 - Build resilient infrastructure, promote inclusive and sustainable industrialization and foster innovation, and Goal 11 - Make cities and human settlement inclusive, safe, resilient and sustainable). Satellites, drones and the Internet of Things can generate highly accurate, geo-referenced digital data about human settlements, providing the information needed for infrastructure projects that better match social and economic needs. These new technologies will contribute to guaranteeing access to energy for all (Goal 7). This is the essence of the "data revolution,” called for by the High-Level Panel of Eminent Persons in their 2013 report. Some monitoring tools for tracking progress toward the SDGs are based on the use of big data.