A security researcher has added another dimension to smart lightbulbs by using them to store a library of banned books, creating what they describe as a “cyberpunk digital dead drop.” Rick Osgood wrote about the idea behind the Banned Book Library on his personal blog, alongside a retelling of the process to create a working prototype. Meanwhile, all the code is open source and available via Codeberg . So, anyone interested can acquire some ESP32 -powered smart lightbulbs and distribute stealthy banned book libraries of their own.

Osgood notes that he was pondering making smart lightbulbs more useful.…