A Single Magnetic Particle with Nearly Unlimited Encoding Options

Communicating objects are demanded for product security and the concepts of a circular economy or Internet Nano Things. Smart additives in form particles can be key to equip with desired materials intelligence as their miniaturized size improves applicability security. Beyond proposed identification by optical signals, magnetic signals deriving from hypothetically used but date only resolved roughly. Herein, particle-based toolbox is reported, that provides more than 77 billion (77 × 109) different codes, adjustable one single particle, read out unambiguously, easily, quickly. The towards achieving vast code variety hierarchical supraparticle design inspired music: similarly how line-up variation musical ensemble yields distinguishable overtones, composition alters overtones. By minimizing interactions, customizable spectrally decoded simple method particle spectroscopy. A large number chemically codes possibility remote, contactless detection within breakthrough unexploited labeling applications pave way intelligence.