As of 2015, current satellite technology allows image resolution down to inches, which means satellites can zoom in on people. The legal limit for satellite images that can be released commercially is 10 inches, but the satellite technology currently in use allows even closer images to be taken.
DigitalGlobe’s satellites WorldView2 and WorldView3 can zoom in on people and on objects as small as smartphones, and the latest spy technology used in U.S. satellites allows zooming in even closer. With the technology used in reconnaissance satellites, objects smaller than 4 inches in size can be seen. While commercial services such as Google don't have the right to release such pictures yet, its satellites are capable of zooming in on people.