Interoperability Hell: Why Your Smart Devices Still Won't Talk to Each Other
You replaced your Wi-Fi router on a Saturday morning. By the afternoon, the hallway lights had stopped answering, the robot vacuum was "offline", and nine smart plugs were waiting in an app you deleted two phones ago, under an account you don't remember creating. Nothing was broken. Every device still worked exactly as manufactured. They just no longer agreed on who was in charge or which cloud they answered to. That's interoperability hell — and in 2026, three years after Matter promised to fix it, your devices still talk to their manufacturers far more fluently than they talk to each other. π§© The Short Version The maze accreted one reasonable decision at a time: Zigbee and Z-Wave meshes that never spoke to each other, then a decade of Wi-Fi gadgets that each shipped with their own app, cloud and account. The radios were never the hard part — the fragmentation lives in data models and accounts . The walled gardens — Alexa, Google Home, Apple Home — imposed ord...