The Human Influence Index, from the Last of the Wild data set, is a measure of direct human influence on terrestrial ecosystems using the best available data sets on human settlement (population density, built-up areas), access (roads, railroads, navigable rivers, coastline), landscape transformation (land use/land cover) and electric power infrastructure (nighttime lights). Its values range from zero to 64, with zero representing no human influence and 64 representing maximum human influence.
How do bike share systems keep two-wheel fleets operable and available when needed? Relying on IT will put these programs at the same risk of sudden obsolescence you worry about when upgrading a phone.