IDENTIFICATION CARD Russian patent published in 1997 - IPC

FIELD: facilities for data identification, presentation, and display in alarm systems warning about unauthorized intrusion. SUBSTANCE: identification card has plastic base 1 mounting coding items 3 and protective polymeric layer 6. Coding items 3 are made as current-conducting bars of different width and/or length placed in parallel and combined by common conducting bus 2; common electroluminescent layer 4 is applied above these bars with transparent electrode layer 5 electrically connected to other bus 2 by means of conducting jumper 7 applied overall. Buses 2 function to supply respective voltages to coding items 3 and transparent electrode 5 when card is passed through reader. EFFECT: Improved protection of card against unauthorized use. 1 dwg