MAGNETIC TAG AND METHOD AND SYSTEM FOR READING A MAGNETIC TAG

摘要

A method and system are presented for reading a magnetic tag (10), which is formed by an array of elongated magnetic elements arranged in a spaced-apart parallel relationship in accordance with a pattern of coded information. The tag (10) is located within an interrogating zone where an interrogating field is created. The interrogating field has an alternating traveling magnetic field (102) component with a space phase shift distribution along an axis perpendicular to a direction of force lines of the alternating traveling magnetic field component (102).