Modern Relevance of Invisible Ink Messages
As an indication of security, most inks mentioned above were already known by the end of World War I. However, in 1999, the U.S. Central Intelligence Agency successfully requested that a 1940s technical report on invisible ink remained exempt from mandatory declassification, based on the claim that invisible ink was still relevant to national security. The report thus remained classified until 2011.
Former MI-6 agent Richard Tomlinson alleges that Pentel Rolling Writer rollerball pens were extensively used by MI-6 agents to produce secret writing (invisible messages) while on missions.
In 2002, a gang was indicted for spreading a riot between federal penitentaries using coded telephone messages, and messages in invisible ink.
In 2008, a British Muslim, Rangzieb Ahmed, was alleged to have a contact book with Al-Qaeda telephone numbers, written in invisible ink.
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Famous quotes containing the words modern, relevance, invisible, ink and/or messages:
“And, in fine, the ancient precept, “Know thyself,” and the modern precept, “Study nature,” become at last one maxim.”
—Ralph Waldo Emerson (1803–1882)
“Wherever the relevance of speech is at stake, matters become political by definition, for speech is what makes man a political being.”
—Hannah Arendt (1906–1975)
“A different world can be created or re-created—but not until we stop enshrining the economic values of invisible labor, infinite and obsessive growth, and a slow environmental suicide.”
—Gloria Steinem (b. 1934)
“Paper is soft and ink is fluid; it might be better if some pages of this chronicle could be written on chips of granite at the point of steel.”
—E. M. Almedingen (b. 1898–?)
“Pictures are for entertainment, messages should be delivered by Western Union.”
—Samuel Goldwyn (1882–1974)