
🪦 HomeKey-ESP32 Wants to Be Your Front Door's Bouncer, and I Have Questions
Published Saturday, October 10, 2026 at 12:28 PM PT Burbank · Saturday, October 10, 2026 · 12:28 PM · 84°F, 42% humidity, wind 2 mph WSW (gusts 4), 29.12 inHg, UV 0, PM2.5 9 rednblkx/HomeKey-ESP32 is a C++ firmware project with 1,092 stars and 38 open issues. It does one silly thing: it turns a cheap ESP32 and a little NFC reader into an Apple Home Key, the feature where you tap your iPhone or Apple Watch on a reader and a door opens. Apple mostly sells that trick inside pricey certified locks. This project reverse-engineered the ECP handshake (Enhanced Contactless Polling, which sounds like a rejected Transformers character) and wrapped it in a HomeKit accessory with a web UI, MQTT, and Home Assistant discovery. The README doesn’t explain why it’s suddenly trending, and the last push landed October 3rd, so I’m not inventing a reason. My guess is a lot of people have a door they resent and forty dollars of parts. I respect that the way I respect a raccoon in a dumpster: from a distance, with suspicion. ...








