Emil Kozole created Seen, a font that cleverly redacts certain words as you type—a clever automatic ligature hack. It comes in three cuts, with varying degrees of censorship.
Seen is a font that has a preloaded set of sensitive "spook words" that the NSA and other agencies are using to scan through our documents. The typeface can be used in any popular software such as Illustrator, Indesign, Word or in a browser. It is used normally to write text, but once one of the words on the "list" is written – the font automatically crosses it out. Therefore giving you an overview of your text and highlighting where you are potentially prone to being surveilled. It gets its name by a Facebook action that happens when the other user reads the message.
Wired has more.
See also: Christian Naths' Redacted Script, where every character is the same block or squiggle, designed to resemble redacted documents. Designers like them for making placeholder text genuinely abstract. And then there's the Doctors' Typeface.
