ALEXANDRIA, Va., May 19 -- United States Patent no. 12,632,687, issued on May 19, was assigned to THALES DIS FRANCE SAS (Meudon, France).
"Hidden magnetic stripe cards and method therefor" was invented by Stephane Karafotis (Saint Maximin la Sainte Baume, France) and Laurence Ansaldi (Aubagne, France).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a hidden magnetic stripe card and method of personalization, which comprises a personalized medium that includes at least a core layer, a magnetic stripe on the core layer, and an opaque silk-screening layer above the magnetic stripe that hides the magnetic stripe from view, where the silk-screening layer comprises iron tetroxide combined with ink. In so...