High-performance giant magnetoresistive (GMR) sensorics are realized by D. Karnaushenko, D. Makarov, and co-workers on page 880. These devices are printed at predefined locations on flexible circuitry. The printed magnetosensors remain fully operational over the complete consumer temperature range and reveal a GMR up to 37% and a sensitivity of 0.93 T−1 at 130 mT. With these specifications, printed magnetoelectronics can be controlled using flexible active electronics for the realization of smart packaging and energy-efficient switches.