Tech
Smart lock: what it is and which to choose
A smart lock is a digital lock that enables accommodation access via numeric code, smartphone, biometrics, or remote, eliminating the need for physical keys. For short-term rentals it's the most professional self check-in solution: each guest receives a unique temporary code that automatically deactivates at check-out, without host intervention.
- Primary keyword
- smart lock short-term rentals
- Monthly search volume
- ~1,200
Full definition
Smart locks for short-term rentals split into two main categories. Retrofit smart locks like Nuki Smart Lock, August Smart Lock, or Yale Linus install over the existing lock in 30 minutes without structural changes, keeping the physical key working as backup. Integrated keypad smart locks like Igloohome Deadbolt, Lockly Secure Pro, or TTLock fully replace the lock and offer stand-alone numeric code (even without Wi-Fi). All include mobile apps for code generation, access logs, remote unlocking. 2026 prices: €150-300 for mainstream models, €400-700 for premium biometric models.
How it works
The host generates from the app a unique numeric code for the booking, configuring activation and deactivation date/time. The code is sent to the guest via WhatsApp or email. On arrival the guest types the code, door unlocks, event is logged. At check-out the code automatically deactivates. For full integration, smart locks connect to property management systems (Smoobu, Hostaway) or AI concierges like Verto AI that automatically generate and send codes upon receipt of each new confirmed booking.
Practical example
A host with 3 apartments in Pisa switched from key safe to Nuki smart locks in 2024. Cost: 3 × €230 = €690 (plus €60 accessories, total €750). ROI calculated after 14 months: zero emergency calls for lost/duplicate keys (previously 8-10/year, each ~30 minutes = 5 hours/year), zero night access incidents (previously 4-5/year, each required personal trip = 8 hours/year), increased late-night last-minute bookings (+12% estimated revenue). Time saved: ~13 hours/year.
📊 Key data point
In 2026, 32% of new short-term rental access installations in Italy are smart locks, vs 8% in 2020. Growth driven by cost reduction (€150-300 vs €500+ in 2018) and availability of models compatible with standard Italian doors.
Frequently asked question
What if internet goes down or the smart lock battery dies?
Best smart locks for short-term rentals (Nuki, Igloohome, Yale Linus) have multiple backups. Numeric code works offline (no internet needed), lithium battery lasts 12-18 months with low-charge alert via app 2-3 weeks before depletion, mechanical physical key always works as last backup. Real fail probability is statistically low (<1% of bookings). Either way, keep an emergency kit accessible (hidden backup key, rechargeable batteries, trusted locksmith contact).
Related terms
Explore the network of concepts that orbit around this term.