GPS Is Vulnerable to Attack. Magnetic Navigation Can Help
Signals from the global navigation satellite system can be jammed and spoofed, so a Google spinout is working on an alternative positioning and navigation system that uses the Earth’s magnetic field.
![GPS Is Vulnerable to Attack. Magnetic Navigation Can Help](https://media.wired.com/photos/677e92b92f3232a509ac17e4/191:100/w_1280,c_limit/AQNav_su%20aereo%20C17.jpg)