This ICNF 2013 paper by Handel and Tournier examines quantum 1/f noise in spintronics and the future of downscaling. The research analyzes how quantum 1/f noise affects spin-based electronic devices as they scale to nanometer dimensions, investigating noise in spin valves, magnetic tunnel junctions, and spin transistors, and predicting fundamental limits on device miniaturization imposed by quantum noise, with implications for the viability of spintronic memory, logic, and sensing technologies at the ultimate scaling limits.