# The Post-Quantum Migration Has a Built-In Casualty: The Billion Devices That Cannot Be Patched - Date: 2026-04-19 - Category: Quantum Computing Meta flipped the switch on quantum-resistant encryption. Billions of IoT devices cannot follow — and it is not a planning failure. It is a hardware constraint written into chips with 64KB of RAM. Some will be cryptographically orphaned for their entire operational life. ---