Arrangement for activating and/or deactivating a marker strip having a magnetizable layer

摘要

A portable device for deactivating and/or activating a magnetizable layer forming part of a marker strip of an antishoplifting system. The device includes an electro-optical reading head for reading specially coded indicia on the marker strip and an A.C. current electro-magnetic coil for producing a magnetic field to deactivate or activate the magnetizable layer of the marker strip. The electro-optical reading head and electro-magnetic coil are mounted in a common portable housing and are connected to a cashier's register.