The robots are covered in 360 degree cameras, lidar, and what is effectively signals intelligence equipment fingerprinting every smartphone, Wi-Fi, and Bluetoot

The robots are covered in 360 degree cameras, lidar, and what is effectively signals intelligence equipment fingerprinting every smartphone, Wi-Fi, and Bluetooth device near them. People are more likely to punch a police officer than one of these robots. You would have to have a fairly large EMP to steal one undetected.