⚖️ Is self check-in legal in Spain?
Yes. Neither RD 933/2021 nor VAU/1560/2025 require the host to be physically present. They require data registration — which can be done entirely online. Self check-in with smart locks is fully legal throughout Spain.
4 options for automated key handover
🗝️ Option 1: Physical key safe (keypad)
Level: basicA metal box fixed to the wall or door with a combination padlock code. You share the code with the guest before their arrival.
- Pros: Very low cost (€30–80), works without internet, no installation required
- Cons: Fixed code (security risk), cannot change code remotely, no access log, manual coordination
Suitable for: Properties with very low turnover or as a backup system.
📦 Option 2: Smart key locker
Level: intermediateConnected electronic box that allows you to change the access code remotely from your mobile. Some models generate temporary codes.
- Pros: Remotely changeable code, some include Wi-Fi connectivity
- Cons: Does not integrate with Gotocheck or most PMS; requires manual code management
🔐 Option 3: Smart lock PIN
Level: advancedElectronic lock installed on the door that replaces the physical lock. Access via numeric PIN, smartphone app or NFC. Compatible models integrate directly with Gotocheck.
- Pros: API integration, temporary codes, access history, remote management
- Cons: Higher initial cost (€80–200), requires installation
🤖 Option 4: Smart lock + full automation
Level: professionalSmart lock connected to Gotocheck, which automatically generates unique temporary codes for each booking, sends them via WhatsApp at the right moment and deactivates them at checkout.
- Pros: Zero host intervention, full traceability, automatic integration with SES.Hospedajes and digital check-in
- Cons: Requires compatible lock + Gotocheck subscription
Smart lock comparison: models compatible with Gotocheck
| Brand | Approx. price | Installation | Gotocheck |
|---|---|---|---|
| Nuki | ~€159 | No works — over existing lock | ✅ API |
| Tuya / Smart Life | €30–80 | Replaces the lock | ✅ Native |
| Tedee | ~€199 | No works — over existing lock | ✅ API |
| Yale Linus | ~€149 | No works — over existing lock | ✅ TTLock |
| Keypad (TTLock) | €20–60 | Wall screws | ⚠️ Fixed code, sent automatically |
The complete automated check-in flow with Gotocheck
-
1Guest books on Airbnb, Booking.com or directly
-
2Receives check-in link via WhatsApp — completes ID verification and digital signature
-
3Gotocheck automatically submits to SES.Hospedajes — no manual intervention
-
4Guest receives their temporary access PIN via WhatsApp on their check-in day from the configured check-in hour
-
5Code expires automatically at checkout — nothing to cancel manually
5 properties × 15 bookings/month × 30 min of key handover = 37.5 h/month = approximately €562/month in management time recovered.
Connect your lock and automate access now
Try Gotocheck free for 15 days — no commitment, no credit card.
Get started free →Frequently asked questions
Is self check-in with smart lock legal?
Yes. Applicable regulations (RD 933/2021 and VAU/1560/2025) require guest data registration, not physical presence. Self check-in with smart locks is fully legal throughout Spain.
What do I do if a guest can't get in?
Gotocheck sends the code via WhatsApp shortly before check-in, with instructions. In case of difficulty, the AI assistant can guide the guest in real time. As a last resort, you can send a backup code remotely from the panel.
Can I install a smart lock if the building's owners' association (HOA) doesn't allow it?
Nuki and Tedee install on the inside of the door without modifying the exterior — which in most cases does not require HOA approval. Always check your community regulations.