What to encode
After creating or rotating a push key on Dashboard → Devices, the one-time key callout shows a QR for the full ingest URL:
https://your-domain/api/ingest/YOUR_DEVICE_KEYAnyone scanning the QR on a phone sees the URL — keep devices physically secure; rotate keys if a sticker is lost.
QR on the Devices page
The QR is generated in-app when you create or rotate a push key — no external QR generators required. You can download the SVG or print a simple label (device name + QR + URL) from that callout. See also the curl test payload in Ingest & webhooks.
Onboarding checklist
The dashboard getting-started card tracks device creation, sensor keys, test POST, and alerts.
Pair the QR with sensor labels that match firmware keys (temp1, door1, …).