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It’s a story that seems worthy of front-page headlines: A hacker exposes a major flaw in the protocol that underlies many of the world’s access control systems, defeating it in minutes with some clever programming and off-the-shelf components. That’s exactly what happened during the DefCon conference in Las Vegas last August, when Zac Franken demonstrated how to attack the widely used Wiegand protocol. https://futurelab.assaabloy.com/en/weighing-the-hacking-risks/
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Historically, access control systems have been anything but open. Early electronic access control systems were custom-built by independent entrepreneurs. It could take up to 16 weeks to order new cards. In 1996 the Wiegand Reader Interface became the first interoperability to access control systems. But it is still a long way to go for the security industry, especially for smart cards. https://futurelab.assaabloy.com/en/the-value-and-importance-of-open-and-interoperable-access-control-products/