WhoFi is a system developed at the La Sapienza University in Rome:
»It tracks people by interpreting how their presence disrupts Wi‑Fi patterns, offering a potential alternative to conventional #biometric methods. […] WhoFi does not rely on cameras or physical contact. It needs only an existing Wi‑Fi network to sense human presence and movement.
The technology can operate in darkness, through walls, and even around obstacles, making it a discreet option compared to video #surveillance systems.«
The preprint of the study contains an interesting, but broken off remark at the end: »This work was supported by the “Smart unmannEd AeRial vehiCles for Human l«, which obviously refers to SEARCHER – Smart unmannEd AeRial vehiCles for Human likE monitoRing.
#SEARCHER is a #drone project by the #Italian Ministry of Defense. Its purpose is defined as »This Technological Research proposes to develop an innovative, effective, and efficient system, called SEARCHER, capable of providing Unmanned Aerial Vehicles (#UAVs) with basic intelligence enabling them to autonomously search for and recognize any entity.«
Just so you know why that drone seems so interested in "filming" one dull building wall after another.