Playfair

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Playfair may refer to:

• Lyon Playfair, 1st Baron Playfair (1818–1898)
• Playfair cipher - a manual symmetric encryption technique named after the above

• William Playfair (1759–1823), Scottish engineer and political economist, inventor of statistical graphics
• John Playfair (1748–1819), Scottish scientist, brother of the above
• James Playfair (–1794), Scottish architect, brother of the above

• William Henry Playfair (1790–1857), Scottish architect (National Gallery of Scotland, Royal Scottish Academy)

• PlayFair - a software that removes Apple's FairPlay DRM file encryption

There is more than one crater named Playfair:

• Playfair (lunar crater)
• Playfair (crater on Mars)

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