Magnetometers are nearly ubiquitous in today’s world, fueling applications as diverse as medical diagnostics and self-driving cars. The most sensitive magnetometers, however, can only operate at extreme temperatures and in a shielded environment that isolates the sensor from ambient magnetic fields. Sonera Magnetics is developing a magnetometer that can operate at room temperature and in portable form factors with sensitivity comparable to the best magnetic sensors available today, dramatically increasing potential applications.