#Legionlabs

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Article · October 14, 2026 An Eight-Dollar Microcontroller Shielding Vintage PCs With Quantum Encryption

Legionlabs built the Selectric-256, an eight-dollar hardware box using an ESP32 chip to bring military-grade post-quantum messaging to computers of any age. The device offloads network processing to external Wi-Fi and connects via USB or serial, keeping legacy machines secure without cloud subscriptions.