SECURITY SYSTEM FOR DOCUMENTS WITH A MAGNETIC TRACK FOR RECORDING INFORMATION

摘要

According to the present invention, it is provided for a security system for pre-encoded or not pre-encoded documents with magnetic track for recording information, where the recording magnetic track is split into areas of magnetic material for data recording at low and high coercivity, the layout being such that the read and/or data recording equipment operating at low or at high coercivity can discriminate between counterfeited documents or documents whose data have been fraudulently altered.