Scientists in Germany have demonstrated a startling new form of surveillance: identifying people using nothing more than ordinary WiFi signals. By analyzing how radio waves bounce around a room, researchers can effectively “see” and recognize individuals — even if they are not carrying a device and even if their phone is turned off.
IIRC, when Meta bought out iRobot, it slipped out that they were using Roombas to collect the square footage and entire layout of your house to add to your data sets. So this doesn’t seem surprising at all. Good thing I configure my own router and firewall.