| http://www.w3.org/ns/prov#value | - n 31, 1989Valid Technologies, Ltd.Access card provided with coded security meansEP0028528A1 *Nov 4, 1980May 13, 1981Lear Siegler, Inc.Code carrying means and detecting system thereforEP0155050A2 *Mar 1, 1985Sep 18, 1985Koninklijke PTT Nederland N.V.Device for providing an article, more in particular a container, with a selectively adjustable code, and reading apparatus for recognizing such a codeE
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