(CNN) -- Can graphic design help protect your privacy? Sang Mun, a designer and former NSA contractor, thinks so. Just months after Edward Snowden controversially lifted the lid on digital surveillance being conducted by the U.S. and other governments, the issue of online privacy is back in the spotlight. Earlier this month Facebook CEO Mark Zuckerberg expressed concern that users' trust in internet companies had been damaged by the revelations. Google's Eric Schmidt also called for greater transparency from the U.S. government over surveillance. Sang Mun's response was more direct -- the Korean designer has created four new fonts called ZXX that aim to disrupt the Optical Character Recognition (OCR) systems used by Google and others to analyze text.
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Designer Sang Mun creates 'unhackable' fonts
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The four fonts are designed to disrupt Optical Character Recognition software
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Experts suggest that to be effective such fonts would need to be used with encryption
"I decided to create a typeface that would be unreadable by text scanning software (whether used by a government agency or a lone hacker)," @placeholder told CNN via email, "misdirecting information or sometimes not giving any at all."