How to Choose a Smart Lock: Seven Things Landlords Should Check Before Buying

How to Choose a Smart Lock: Seven Things Landlords Should Check Before Buying

Smart lock spec sheets all look much the same: fingerprint, PIN, card, app.

What will actually affect you is usually not on the spec sheet.

If you are managing one home you live in, the stakes are low. If you are managing ten or a hundred units, choosing wrong does not mean replacing one lock — it means replacing every one of them.

1. Cylinder grade

However good the digital security is, it is meaningless if the physical cylinder is weak.

Cylinders are graded by resistance to manipulation, commonly A, B and C. Grade C is the highest, with the strongest resistance to drilling and technical opening.

If a spec sheet only says "high-security cylinder" without a grade, ask.

2. Unlocking methods — and what happens when the network or power fails

Multiple unlocking methods are not just convenience. They are redundancy.

What to confirm:

• Which methods are supported? (fingerprint / PIN / card / Bluetooth / remote via app)
• Does it still open without a network connection? (Bluetooth, PIN and fingerprint should work offline)
• What happens when the batteries die? (external emergency power, or a mechanical key override)
• Does it warn before the battery runs low?

Press hard on this one. A tenant locked out at midnight costs far more to resolve than the price difference between locks.

3. Can access be revoked, not just granted?

This is the single biggest difference between owner-occupied and rented use.

Owner-occupiers only need to grant access. Landlords need access lifecycle management:

• Can all of a departing tenant's access be revoked immediately on move-out?
• Can temporary visitors — viewings, maintenance, cleaning — be issued one-time PINs or time-limited access?
• Across many units, can this be done in bulk from one back office rather than lock by lock?

The problem with physical keys was never that they are hard to copy. It is that you do not know how many are out there. A smart lock turns keys into digital permissions you can withdraw at any time.

4. How long are entry logs kept, and can you search them?

Having a record, or not, changes how hard a dispute is to resolve.

• Can you see who opened the door, when, and by what method?
• How long are logs retained?
• Can you search by property and date range, or only scroll through entries one by one?

When a tenant reports something missing, or that someone entered their room, this is the only thing that can establish what actually happened.

5. Which country holds the data?

Lock records show who entered a specific address and when. That is more sensitive than most people assume.

Worth asking:

• In which region are the cloud servers located?
• What is the vendor's data governance policy?
• If the vendor fails, or discontinues the service, does the lock still work?

Inno Future's smart locks use a European server architecture that does not route through mainland China, precisely so that customers do not have to worry about where their data goes.

6. Are you allowed to install it in a managed building?

This is the question most often overlooked, and asking it early avoids trouble later.

The lock on your own front door is part of the exclusive-use portion, so replacing it is generally your decision.

But where common portions are involved, the Condominium Administration Act applies:

Article 8 provides that for the surroundings, external wall surfaces, rooftop platforms and other parts not belonging to the exclusive-use portion, acts such as altering the structure or colour, installing advertisements or window grilles are — in addition to any statutory requirements — subject to the building's covenant or a resolution of the owners' meeting where such a covenant or resolution exists and has been duly filed with the competent authority.

Article 9 provides that residents must use common portions in accordance with their intended purpose and ordinary manner of use.

Situations to watch for:

• Installing access control on the main lobby door → a common portion; requires the management committee or owners' meeting
• Installation that would alter the external wall appearance → subject to Article 8
• A building covenant with its own rules on locks or door appearance → the covenant governs

Replacing the lock on your own door is usually fine. If it touches a communal area, ask the management committee first.

7. Does it connect to your management workflow?

The last question, and the decisive one once you are operating at scale.

If the lock runs on its own separate app, managers have to synchronise two systems by hand: sign the lease in one place, grant access in another; end the lease in one place, revoke access in another.

With few units that is tolerable. With many, someone will eventually forget to revoke.

What to confirm:

• Can the lock integrate with your rental management system?
• Can access be granted automatically when a lease is signed, and revoked automatically on move-out?
• Can entry logs be folded into the property's management records?

A pre-purchase checklist

• What grade is the cylinder? (C is the highest)
• Which unlocking methods are supported? What is the fallback when the network or power fails?
• Can access be revoked immediately on move-out? Can one-time or time-limited PINs be issued?
• How long are entry logs retained, and how are they searched?
• In which region is the data stored?
• Is the installation location an exclusive-use or common portion? Does the covenant restrict it?
• Can it integrate with a rental management system to grant and revoke access automatically?

Inno Future smart locks

Our smart locks are designed for property management operators, residential buildings and commercial offices — not single-home owner-occupiers:

• Grade C cylinder
• Fingerprint / PIN / card / Bluetooth unlocking
• Remote unlocking, one-time PINs, permission and time-window settings
• Complete, auditable entry logs
• European server architecture, not routed through mainland China
• Integrated with the Hao Future App, so granting and revoking access is part of the rental workflow

See the smart lock product page

*The provisions of the Condominium Administration Act referred to above reflect the law in force at the time of writing and are provided for general reference only. Individual building covenants and owners' meeting resolutions differ; please confirm with your management committee before installation.*