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Cendra automatically creates unique smart lock access codes for each guest reservation and revokes them at checkout. No manual code management — Cendra handles the entire lifecycle based on your reservation data from your PMS.

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How Guest Access Codes Work

  1. New reservation syncs from PMS — Cendra detects a confirmed booking with check-in/out dates
  2. Code created — Cendra generates a unique access code on the property’s smart lock via Seam
  3. Code activated — the code becomes active at the check-in time
  4. Guest arrives — they use the code to unlock the door (you can share the code via WhatsApp or email using AI agents)
  5. Code revoked — at checkout time, Cendra automatically removes the code from the lock

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Code Lifecycle

StageWhenWhat happens
CreatedReservation confirmedUnique code generated and scheduled on the lock
ActiveCheck-in timeCode works on the lock
In useDuring stayGuest can lock/unlock with their code
RevokedCheck-out timeCode is automatically removed from the lock

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Sharing Codes with Guests

Cendra’s AI agents can share access codes with guests automatically through your communication channels:
  • WhatsApp — AI sends the code as part of pre-arrival instructions
  • Email — included in check-in information emails
  • Timed delivery — codes can be shared 24 hours before check-in, or at any time you configure
The AI agent references the access code from the property’s device data — it’s part of the knowledge the AI uses when responding to check-in questions.

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Security

  • Unique codes per reservation — every guest gets a different code
  • Time-bound — codes only work during the reservation period
  • Automatic cleanup — no forgotten active codes from past guests
  • Audit trail — Cendra logs when codes are created, used, and revoked
  • Real-time status — see which codes are currently active on each lock

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Supported Locks

Guest access codes work with any Seam-compatible smart lock that supports temporary codes, including:
  • Yale smart locks and deadbolts
  • August smart locks
  • Schlage smart locks
  • Level Lock
  • Igloohome locks and lockboxes
  • Kwikset smart locks
  • Nuki smart locks
  • And 15+ additional brands

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Combining with AI Agents

The most powerful setup combines guest access codes with Cendra’s AI agents:
  1. Guest asks “how do I get in?” → AI retrieves the access code and property entry instructions from the knowledge base
  2. Pre-arrival message → AI automatically sends check-in instructions with the access code 24 hours before arrival
  3. Guest reports lock issue → AI troubleshoots (battery check, code verification) and escalates to your team if needed