METHOD FOR PROTECTION OF VALUABLE ITEMS AGAINST FAKING Russian patent published in 2000 - IPC

FIELD: mass production or authorized reproduction of such items as bank notes, securities, credit documents. SUBSTANCE: method involves application of protection label, which is designed as isotope indicator which is made from mix of stable isotopes. Position of protection label provides possibility to check its presence on item under protection using detection by means of at least one method of spectral analysis, for example, X-ray fluorescence or luminescence. Protection label is produced either directly on item under protection or independently in any possible shape and using any technology. EFFECT: increased protection level using inexpensive and accessible materials and methods, possibility of detection using inexpensive and accessible tools. 5 cl