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Introduced as the man who knows Alice and Bob's shared secret. #accubp2010
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Whitfield Diffie... Needs no introduction :)
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"That's it!" Colossus Mk 2 at #bpark #tnmoc
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This is Tunny, the machine which did the Lorenz traffic decryption. #bpark
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The Bombe Room at #bpark.
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Front of #bpark.
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One of my first encounters with a computer was with a PET #tnmoc
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David Kahn... in the distance. Taking questions on loose-lips culture.
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Bloody Pirates!
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Waltham Traveler Movement
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Waltham Traveler Face
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Meta-Mathematics
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St. Catherine's Island
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Heather at Castlemartin
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St. Gowan's Chapel
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Fake Tilt Shift with Focal Blur
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Another Fake Tilt Shift of New York
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Fake Tilt Shift of New York
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The Stratfords' Bridge (HDR)
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Saracen House (HDR)