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Matthew Butler

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MagnePins: A Modular, Affordable, and DIY Refreshable Braille and Tactile DisplayUIST 20252025-09-28
A modular refreshable tactile display is built as a 24x89 pin array with 2.5 mm pin pitch and a separate 6x32 Braille module, assembled in a makerspace from…
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Modern C++ Safety and Security At 20CppCon 20202020-09-14
C++20 introduces concrete safety wins and caveats: concepts move interface checks to compile time and cut runtime errors, atomic<std::shared_ptr> provides a…
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If You Can't Open It, You Don't Own ItCppCon 20192019-09-15
Examples start with pacemakers and insulin pumps being reachable over Wi‑Fi, move to ShadowHammer infecting about 500,000 systems, then a researcher scanning…
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“Secure Coding Best Practices: Your First Line Is The Last Line Of Defense (1 of 2)”CppCon 20182018-09-23
Walks through concrete C/C++ mistakes (unsafe strncpy use, unchecked std::string lengths, std::copy heap overflow, dangerous cast to enums) and shows a live…
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“Secure Coding Best Practices: Your First Line Is The Last Line Of Defense (2 of 2)”CppCon 20182018-09-23
Static analyzers like CppCheck and Clang‑Tidy catch correctness issues but miss many security flaws; security scanners such as Coverity, Sonar, PVS Studio…
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Accessible Maps for the Blind: Comparing 3D Printed Models with Tactile GraphicsCHI 20182018-04-21
A controlled study with 16 touch readers compares tactile graphics and 3D printed maps of parks and multi-level train stations and finds a strong…
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