Katherine Mangu-Ward on a Font to Discourage NSA Snooping

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It actually reads, "Thanks, Obama!"

The ZXX font is designed to be difficult for machines to read. Former National Security Agency contractor Sang Mun created the font as a response to increasing government incursions on privacy. It's unclear how important optical text recognition is in government snooping, but as Katherine Mangu-Ward explains, every bit of extra privacy counts.