ISRO launched the beta version of its web-based 3D satellite imagery tool, Bhuvan, on August 12, 2009. Bhuvan offers more detailed imagery of Indian locations compared to other Virtual Globe software, with spatial resolutions ranging from 5 to 100 metres. Locations can be viewed from different perspectives, and the software will also provide functionality for the measurement of distances. The Bhuvan portal is designed to run on slow Internet connections. The images available do not include any military installations in India, due to security concerns.