If this doesn’t match your setup, please provide:
Because the key is registered "hot," it may carry a time-to-live (TTL) parameter. The protocol can enforce a rule where $PK_hot$ expires after $T$ time units, requiring the user to re-authenticate via a standard method to promote it to a "cold" or persistent key.
: Handles guest check-in/check-out, card expiration, and room reservations.
Depending on your internet access, you can use the ZKTeco License Activation portal for two primary methods: User Manual - Hotel Lock System - ZKTeco