Attempting to take detailed photos, let alone perform “gait analysis” from geostationary satellites i.e. from a distance of about 37,000 kilometres, is never going to happen.

Changing your gait enough to confuse these algorithms, can be as simple as changing your shoes.

Gait analysis is first being tried out on urban CCTV cameras networks, rather than via satellites, and, like other biometric technologies, it is hugely inaccurate and prone to false positives and false negatives.

There have been research projects for real time video “suspicious behavior” analysis (e.g. dwell time or loitering near parked cars), and attempts at detecting “stabbing” or “kicking” motions.