Magnetic tag device, reader for a magnetic tag, and method of interrogating a magnetic tag

摘要

Magnetic tag device for generating a magnetic tag, comprising one or more magnetic field sources, wherein the one or more magnetic field sources are arranged such that, upon generation of magnetic fields by the one or more magnetic field sources, their respective magnetic fields superimpose so as to form an overall magnetic field exhibiting a predefined pattern representing the magnetic tag. The invention is further related to a reader for a magnetic tag and a method of interrogating a magnetic tag.