Underground Fiber Optics Cables Allow People and Cars to Be Tracked. Did You Know? Underground Fiber Optics Cables Allow People and Cars to Be Tracked. Did You Know? July 2, 2021 By B.N. Frank Some experts have raised concerns about underground fiber optics cables being used for unsafe âlast mile wirelessâ with 5G and/or Wi-Fi (see 1, 2). Some…