ADARAZ Link

A permanent, encrypted connection between the reader and your server. The reader connects to the server over a WebSocket by itself and keeps it open:

• punches arrive right after the card tap; those made while offline are delivered later and marked as late,
• the server sees the reader's state (connected, card reader working, relay state),
• the server can drive the relay, e.g. open a door, if the reader's administrator allows it.

reader ══ WebSocket + Noise (connects out) ══ your server
  punches, state ────────────────────────────▶
                 ◀──────────────────────────── acks, relay

Every connection is a Noise session with mutual authentication by keys exchanged at pairing, so plain ws:// inside a LAN is safe. wss:// works too, for a server on the internet.

Three ways

	For whom
Home Assistant	a ready integration, no code
Your own server in Python	the adaraz library does the whole protocol, you only handle punches
Another language	your own implementation of the specification