The single most painful task in running a short-term rental is not the cleaning, the laundry, or the listing photos. It is the key handover. You wait around for a 3 p.m. check-in that turns into 7 p.m., you drive across town to drop off a spare set when a guest loses theirs, you change the lock the day a tenant leaves because two of the three keys you handed over never came back. A smart lock for an Airbnb rental property removes the physical key from the booking process entirely — guests unlock the door with their phone, with a one-time PIN, or with both, and the access disappears automatically the moment check-out hits.
This guide is for hosts who run one to a handful of Airbnb-style short-term rentals and want to stop touching keys. It covers the five requirements a smart lock for a rental property has to meet, how 1Control DORY answers them on a standard European front door, how to combine DORY with the PAD PIN keypad and the LINK Wi-Fi hub for a complete short-let stack, and what the realistic costs and edge cases look like in 2026.
Want to skip ahead and see if your rental property's door is compatible? Discover 1Control DORY or run the free door compatibility check in 60 seconds before reading on.
Why traditional keys fail short-term rentals
Physical keys were designed for a long-term occupant, not for a rotation of strangers who stay two nights. Every limitation a host complains about is the same property of the metal key, just seen from a different angle.
Keys cannot be revoked. Once a key leaves your hand, you have no way to take it back. A guest who keeps a copy, a courier who hangs on to a spare, a cleaner who lets someone else borrow one — the only response is to swap the cylinder, every time, at the cost of a locksmith call and a few hundred euros. Hosts who run the maths on a busy listing eventually replace the cylinder more often than the bedsheets.
Keys are impossible to schedule. A booking has a start time and an end time. A key does not know that. The only way to enforce check-in / check-out windows with a metal key is to be physically present at both ends, or to rely on a key-safe with a code that you then have to change between guests — which is the same problem rebranded.
Late arrivals cost evenings. The 11 p.m. check-in that turns into a phone call from the kerb is the universal short-let story. A flight is delayed, a train is missed, traffic stops, and the host either drives across town in pyjamas or loses the booking. With keys this is the only failure mode; with a smart lock the guest opens the door themselves whenever they arrive.
Cleaning crews and contractors compound the problem. Anyone who needs occasional access — the Tuesday cleaner, the plumber, the Wi-Fi installer — needs either their own key (a copy you cannot revoke) or a key handover from you (a trip you do not have time for). The smart-lock answer is a time-bound share that expires automatically.
What a smart lock for Airbnb has to do
Most consumer smart locks were designed for a homeowner who lives in the house, not for a host who manages bookings. The five requirements below are what separates a lock that survives short-term rental use from one that becomes a liability after the third guest.
- Time-bound guest access. Every share has to carry a start and end date and time. When check-out passes, the access has to revoke automatically — not with a reminder for you to revoke it manually, not at the next time the lock is online, but as a property of the share itself.
- A no-app option for guests who cannot or will not install one. Some guests will not install a smart-lock app for a two-night stay, and you cannot force them. A wall-mounted PIN keypad fills this gap: the guest types a numeric code, the door opens. The PIN can be the same for the duration of their booking and disappear afterwards.
- Remote management for the host. The whole point is to stop driving across town. You have to be able to add, revoke and verify access from your phone, and ideally open the door remotely for a delayed cleaner or a stuck contractor.
- A mechanical key fallback you control. A short-let lock that has only one method of entry is a liability. You need a permanent way back into the property — a real metal key that you keep, that the cleaner keeps in a key safe, and that survives flat batteries, lost phones and bricked locks.
- Battery life measured in months, not weeks. If the lock burns through batteries every two months, you will be changing them during turnovers, and one day a guest will arrive to a flat lock. Real-world battery life of six months or more is the threshold below which the lock generates work instead of removing it.
1Control DORY for short-term rentals
1Control DORY is an electronic Euro cylinder smart lock built around exactly the trade-off short-let hosts care about: keyless entry as the everyday default, mechanical key as the permanent fallback, no internet required to open the door, and time-bound shares as a first-class feature of the app. DORY is Italian, patented, and designed to retrofit a standard European front door in about ten minutes — a single screw, no drilling, no wiring, no door modification — which makes it acceptable on rented properties and reversible at end of tenancy.
Mapping DORY against the five requirements above:
- Time-bound shares — built into the 1Control app. Each guest share carries start date, end date, optional hour-of-day restrictions, and revokes automatically at end of window.
- No-app option — add 1Control PAD, a wireless Bluetooth keypad that sits outside the door. Guests type a PIN, no app required.
- Remote management — from the app, plus optional remote opening via the LINK Wi-Fi hub. You can add, revoke and audit shares from anywhere; with LINK you can also open the door remotely.
- Mechanical key fallback — DORY Standard ships with five traditional keys, MINI with three. The mechanical key keeps working even with flat batteries, with a dead phone, with no internet.
- Battery life — approximately one year on two CR2 lithium cells. Roughly six times longer than the typical motor-on-thumbturn competitor (Yale Linus, Nuki, August), because DORY drives the cylinder mechanism directly rather than rotating a key.
Time-bound guest access from the 1Control app
The mechanic that does the most work in a short-let setup is the time-bound share. In the 1Control app, the host taps Shares, enters the guest's phone number, selects the DORY device, and sets a start and end window that matches the booking. The guest installs the free 1Control app on their iPhone or Android, registers with the same phone number they gave you (the same number Airbnb already collects), and the access appears in their app automatically — no PDF of instructions, no manual code, no key.
At check-out, the share expires by itself. The host can also revoke it manually at any time — useful if a guest checks out early, if a booking is cancelled, or if anything goes wrong. Shares are free with no monthly or per-guest fee. DORY supports up to 450 users per device across the device's lifetime, which is enough for several years of weekly bookings on a typical listing before you need to clear out old shares.
Mechanical key backup for cleaning crew and emergencies
The mechanical key is the under-appreciated safety net of a short-let smart lock. Hosts typically keep one set with the cleaning crew (so the cleaner can let themselves in regardless of app shares), one set in a small key safe outside the property as a guest-side emergency option in case a phone is lost mid-stay, and a set or two at home as personal backup. Because DORY ships with five mechanical keys on Standard and three on MINI, this is achievable without ordering anything extra. The mechanical path is permanent: it does not depend on batteries, Bluetooth, the 1Control app, the manufacturer's cloud, or your internet connection.
Audit trail: who entered and when
Every opening is logged. The host can see, from the 1Control app, the name of the user who opened the door and the timestamp — for the host, for each guest share, for the cleaner, for anyone with an active share. The audit log is useful for verifying that a guest actually arrived (and on time), that the cleaner came on the promised Tuesday, and for resolving the rare dispute over whether someone was on the property when they claim not to have been. The log is private to the host and not shared with guests.
Setup for hosts: a 4-step workflow
The end-to-end workflow for a host setting up DORY on a rental property is fast and reversible. Most listings are operational within an hour of unboxing.
| Step | What you do | Time |
|---|---|---|
| 1. Check door compatibility | Run the free DORY compatibility tool — an interactive questionnaire plus a printable paper measurer that verifies cylinder length, defender clearance and door thickness. Most European front doors with a Euro cylinder pass. | 5 min |
| 2. Install (retrofit cylinder, no drilling) | Unscrew the single screw holding the existing Euro cylinder in place, slide the old cylinder out, slide DORY in, screw back in. The original cylinder is preserved — keep it for end of tenancy. No drilling, no wiring, no door modification. | 10 min |
| 3. Pair and configure | Open the 1Control app on your phone, pair with DORY using the 8-digit admin code on the inside of the device, set the lock name and admin profile. Optionally add PAD and LINK at this step. | 15 min |
| 4. Issue your first guest share | Shares → New share → enter guest's phone number → set start and end of booking → send. The guest installs the free 1Control app and the access appears automatically. | 2 min per booking |
The reversal at end of tenancy is the mirror image of the install. Unscrew DORY, slide the original cylinder back in, screw in. The door is exactly as it was before. This is what makes DORY landlord-friendly on rented properties: there is nothing to repair, no holes to fill, no paint to touch up — see our dedicated no-drilling install guide for the full step-by-step with photos.
Beyond DORY: PIN access (PAD) and remote unlock (LINK)
DORY is the lock; PAD and LINK are the two accessories that turn it into a complete short-let stack. Neither is required, both pay for themselves quickly on a busy listing.
PAD (PIN keypad outside the door) — the no-app fallback. Some guests refuse to install a smart-lock app for a two-night stay, and pushing them only generates support requests. PAD is a wireless Bluetooth keypad that sits next to the door. The host generates a numeric PIN from the app and binds it to the same start/end window as the booking; the guest types the PIN at arrival, the door opens. PAD itself supports up to 1,000 PINs, runs on AAA alkaline batteries for two-plus years at ten openings a day, and the PIN can be revoked at any time. The architectural advantage of decoupling the keypad from the lock is durability — the keypad is the exposed component sitting outside in the weather, the lock is dry and safe behind the door, and you can replace one without touching the other.
LINK (Wi-Fi hub for remote opening) — the “open from anywhere” capability. LINK is a small Wi-Fi 2.4 GHz hub that bridges DORY's Bluetooth signal to the wider internet. With LINK paired, the host can open the door from the 1Control app on any phone with internet, anywhere in the world. The two short-let scenarios where this earns its keep: a delayed late-night guest arrives, can't get the app working, calls you — you open the door for them remotely; or a contractor or cleaner arrives early when nobody is on site — same. LINK also enables Alexa, Google Home, Siri Shortcuts, Apple CarPlay and Android Auto integrations for the host, though those are less relevant on a rental property than on a primary residence.
The complete short-let stack is therefore DORY + PAD + LINK: the lock handles everyday phone openings and the mechanical key fallback, PAD handles the no-app guests, and LINK handles remote unlocks. Hosts running a single property frequently start with DORY only, add PAD after the first stubborn guest, and add LINK after the first 11 p.m. phone call. The stack pays itself back in saved trips and saved cylinder swaps within the first few months on a busy listing.
DORY vs Yale Linus vs Nuki for Airbnb hosts
The three locks most short-let hosts shortlist in the UK and EU are 1Control DORY, Yale Linus L2 and Nuki Smart Lock 4. They make different architectural choices that matter more on a rental than on a primary residence.
| Feature | 1Control DORY | Yale Linus L2 | Nuki Smart Lock 4 |
|---|---|---|---|
| Time-bound guest shares | Yes, free, in app | Yes (Yale Access) | Yes (Nuki app) |
| Max users per device | Up to 450 | Up to 100 | Up to 200 |
| Monthly per-host fee | None | None for basic features | None for basic features |
| Battery life (real-world) | ~1 year (CR2 lithium x 2) | ~2 months (AA x 4) | ~2–3 months (rechargeable) |
| Mechanical key fallback | Always (3 or 5 keys included) | Original key retained | Original key retained |
| Internet required to open | No (BLE local) | No (BLE local) | No (BLE local) |
| PIN keypad accessory | 1Control PAD | Yale Smart Keypad | Nuki Keypad 2.0 |
| Remote opening | Via 1Control LINK | Via Yale Connect | Via Nuki Bridge / Matter |
The two numbers a host should focus on are users per device and battery life, both of which compound with bookings. A motor-on-thumbturn lock that runs through batteries every two months will need a battery change roughly every six guests on a weekly-turnover listing; DORY's one-year battery drops that to twice a year. The user-cap matters less in absolute terms but is a quiet ceiling on how many guests the device can host across its lifetime before old shares have to be cleaned out. For a deeper architectural comparison see our dedicated Nuki vs DORY guide; for the UK Euro-cylinder shopping question see our keyless entry guide.
Edge cases short-let hosts should plan for
Security doors with a defender. Many higher-end European front doors carry an external defender (an escutcheon designed to protect the cylinder against snapping). DORY is compatible with most defenders, but cylinder protrusion needs checking before purchase — an electronic cylinder is slightly longer than a purely mechanical one and may need a different defender size. See the smart lock for security doors guide for the measurement details.
Guests without smartphones. Rare but not unheard of, especially with older guests. PAD with a PIN solves this completely — no app, no phone, just a number.
Properties with multiple doors. A common setup is a building entrance plus the flat's front door. DORY handles the flat door; for the building entrance, if it has a remote-controlled gate or buzzer, 1Control SOLO can copy that remote into the same app so a single guest share covers both doors. See the smartphone gate opening guide for that pattern.
Network outages. Local Bluetooth openings (phone, watch, PAD) keep working with the router unplugged. Only remote opening via LINK requires the internet at both ends.
Frequently asked questions
Is a smart lock allowed on an Airbnb rental property?
Yes. If you own the property you are free to install a retrofit smart lock such as 1Control DORY, which swaps the Euro cylinder in about ten minutes and leaves no holes or wiring on the door. If you rent the property and host on Airbnb yourself, check the tenancy agreement first — most UK landlords accept a fully reversible Euro cylinder swap once it is clear that the original cylinder can be reinstalled at end of tenancy with no trace on the door.
How do I send a smart lock access to my Airbnb guest?
With DORY you share an access by phone number from the free 1Control app. You set a start date and time (check-in) and an end date and time (check-out), optionally restricted to specific hours. The guest installs the free 1Control app on their iPhone or Android, registers with the same phone number, and the access appears automatically — no PDF instructions to send, no physical key to hand over. If the guest does not want to install an app, add 1Control PAD outside the door and issue a numeric PIN with the same time bounds.
What happens if the smart lock battery dies during a guest stay?
DORY keeps working with a traditional mechanical key, in parallel, by design. The Standard ships with five keys and the MINI with three — most hosts keep one with the cleaning crew and store another in a small key safe outside the property as a guest-side emergency option. No guest is ever locked out because the cylinder is a real cylinder, not a digital-only one. Battery life on DORY is approximately one year, much longer than the typical two months of motor-on-thumbturn competitors, so this scenario is rare in practice.
Can I unlock the door for a guest remotely from another city?
Yes, with the optional 1Control LINK Wi-Fi hub. LINK is a small Wi-Fi 2.4 GHz hub that bridges DORY's Bluetooth signal to the internet. Once paired, you can open the door from the 1Control app on any phone with internet — useful for delayed late-night arrivals, contractors, cleaners running late, or simply to verify that the lock locked behind a guest. Without LINK, DORY still opens locally from the guest's phone, watch and from a paired PAD keypad.
How many guests can I host with one DORY?
Up to 450 users per DORY device. The Standard version starts with 10 users included and the MINI with 2; additional users are €5 each one-off, with no monthly per-guest or per-share fee. Sharing itself is always free. For a typical short-term rental that turns over weekly, the included user count is enough for around a year of bookings; high-turnover hosts can top up users from the app in seconds.
Is DORY compatible with my rental property's door?
Most European front doors and composite doors built since the mid-2000s use a standard Euro profile cylinder (EN 1303) — these are compatible. Use the free compatibility tool at 1control.eu/dory_compatibility before buying: it walks you through a short questionnaire and lets you print a paper measuring tool to verify cylinder length, defender clearance and door thickness. If your door already has a Euro cylinder, the answer is almost always yes and the install takes about ten minutes with a single screw.
