000099925 001__ 99925
000099925 005__ 20180318102412.0
000099925 013__ $$aUS7058202$$bUS$$cB2$$d20060606
000099925 013__ $$aWO2004003858$$bWO$$cA3$$d20040212
000099925 013__ $$aAU2003239697$$bAU$$cA1$$d20040119
000099925 013__ $$aAU2003239697$$bAU$$cA8$$d20040119
000099925 013__ $$aWO2004003858$$bWO$$cA2$$d20040108
000099925 013__ $$aUS2004001604$$bUS$$cA1$$d20040101
000099925 02470 $$2EPO Family ID$$a29779149
000099925 02470 $$2TTO$$a6.0368.1
000099925 037__ $$aPATENT
000099925 245__ $$aAuthentication with built-in encryption by using moire intensity profiles between random layers
000099925 260__ $$c2006
000099925 269__ $$a2006
000099925 336__ $$aPatents
000099925 520__ $$aThis invention discloses new methods, security devices and apparatuses for authenticating documents and valuable articles which may be applied to any support, including transparent synthetic materials and traditional opaque materials such as paper. The invention relates to moire intensity profiles which occur in the superposition of specially designed random structures. By using specially designed random basic screen and random master screen, where at least the basic screen is comprised in the document, a moire intensity profile of a chosen shape becomes visible in their superposition, thereby allowing the authentication of the document. An important advantage of the present invention is that it can be incorporated into the standard document printing process, so that it offers high security at the same cost as standard state of the art document production. Another major advantage of the present invention is in its intrinsically incorporated encryption system due to the arbitrary choice of the random number sequences for the generation of the specially designed random dot screens that are used in this invention.
000099925 700__ $$0241914$$aAmidror, I.$$g104383
000099925 8564_ $$uhttp://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&p=1&u=%2Fnetahtml%2FPTO%2Fsearch-bool.html&r=1&f=G&l=50&co1=AND&d=PTXT&s1=7058202$$zURL
000099925 909CO $$ooai:infoscience.tind.io:99925$$pIC
000099925 909C0 $$0252034$$pLSP$$xU10417
000099925 909C0 $$0252085$$pTTO$$xU10021
000099925 937__ $$aLSP-PATENT-2006-003
000099925 970__ $$a2105/LSP
000099925 973__ $$aEPFL$$sPUBLISHED
000099925 980__ $$aPATENT