Card reader · MQTT · Wi-Fi · Session — all connected
Control your hardware.
Nothing else can reach it.
This panel only opens from a phone that's already signed in — scan the code below with the Envoy app.
Scan with your phone
Open Envoy on your phone, tap your card there, then scan this code
Waiting for a scan...
Security
- SessionsOne encrypted, signed cookie, valid for 12 hours — there's no server-side session table to leak.
- Card scansThey travel from the reader to this server over TLS, not plain MQTT.
- QR sign-inOnly works from a device that's already logged in, and each code expires after 3 minutes, one use only.