Check out ZXX, a freely available typeface that may be able to protect your messages from being easily detected or scanned by the big brothers over at the NSA. Designed by South Korean artist Sang Mun, who spent two years gathering intelligence for the NSA during his mandatory military service, and named after the U.S. Library of Congress code for "No linguistic content, Not applicable," ZXX is available in four illegible styles (Camo, False, Noise, and Xed) with each version uniquely camouflaged to confuse the optical character recognition devices from properly scanning the letters.