Geolocation
Geo-positioning is the location of the person at the moment or time period you are interested in.
With personal contact (phone call, chat, correspondence by e-mail, messenger or social network), it is possible to determine the position of the interlocutor by the official data accompanying the call / correspondence, meta-data.
If you need to determine the position of the user you are interested in at a given period or moment in time from the available photo or video materials, you can perform geo-positioning by identifying a characteristic landscape, setting, geometrically or presumably accompanying persons who may be related to the object of investigation by common acquaintances, interests or occupations.