Should my smart lock go on the gate or the wooden door?

In most HDB and BTO flats the metal gate faces the corridor, so smart features like a camera and facial recognition belong on the gate, while the wooden door behind it takes a simple, fast fingerprint lock. Match each lock to the barrier you actually use when you leave the flat.

Why put the camera on the gate instead of the door?

The gate faces the common corridor, so a camera there can see visitors, delivery riders and parcels. Mounted on the wooden door it would mostly view the back of your own gate from a few centimetres away, which is why live monitoring belongs on the gate.

Do I need smart locks on both the gate and the door?

Many Singapore homes fit both: a smarter lock on the gate and a simple fingerprint lock on the door. A Gate and Door Bundle starts from around S$319, GST-inclusive, and is usually better value than one premium lock in the wrong place. You can also start with the barrier you use most and add the second later.

Can I use just one smart lock?

Yes. If you usually lock only the gate, put the smarter lock there; if you rely on the wooden door for security, fit a reliable fingerprint deadbolt on it. The key is matching the lock to the barrier you actually use.

Gate or Door: Where Should Your Smart Lock Go in an HDB Flat?

6 July 2026

One of the most common questions we hear from Singapore homeowners is deceptively simple: should the smart lock go on the gate or the door? It sounds like a small detail, but getting it wrong means paying for camera and facial-recognition features that end up pointing at the wrong thing, or leaving your most-used entry point on an old manual lock.

The answer depends on a quirk of how HDB and BTO homes are built, and once you see it, the decision becomes obvious.

Why the HDB Layout Changes Everything

In most HDB and BTO flats, your main entrance has two barriers. On the outside is a metal gate, usually a sliding or swing grille. Behind it is the solid wooden door. The gate faces the common corridor. The wooden door faces the small gap between the two.

This is different from a landed home or an overseas apartment, where a single front door does all the work. Because the gate sits in front, it is the layer that meets the outside world first. It is what a delivery rider sees, what a visitor knocks on, and what stays open when you want airflow but still want the flat secured.

That physical order is the key to the whole decision. The barrier that faces outward should carry the features that need to see and identify people. The inner barrier can stay simple.

The Case for Putting Smart Features on the Gate

When people picture a smart lock, they usually picture the impressive features: a camera that shows who is at the door, facial recognition that lets the family in hands-free, entry logs on a phone. Every one of those features is more useful on the gate.

Live monitoring belongs where the camera can see. Put it on the wooden door and it mostly views the back of your own gate from a few centimetres away. Mount it on the gate and it sees the corridor, the person standing there, and the parcel on the floor.
Facial recognition works at the outer barrier. You want to be recognised as you approach, at the first barrier you reach, so you walk straight through rather than stopping twice.
Deliveries and visitors happen at the gate. That is where people wait, so that is where a live view and two-way awareness are genuinely handy.

This is why a premium gate lock earns its keep. The Touch 300 Pro, for example, combines live monitoring with facial recognition, palm vein reading, and fingerprint entry, all at the barrier that actually faces the corridor. If you want facial recognition without the camera, the Touch 200 Pro covers that, and the Touch 200 handles reliable fingerprint entry for the gate at a lower price.

The Case for Keeping the Door Lock Simple

If the gate does the heavy lifting, what about the wooden door? For most families, the door lock should be fast and dependable rather than clever. Once you are past the gate, you simply want to get inside quickly.

A slim fingerprint deadbolt is ideal here. Models like the Touch i19, Touch i9, or the value-focused Touch 200D give you quick fingerprint or PIN entry, a clean look on the timber, and a mechanical key backup, without a camera that would have nothing useful to look at. The result is a door that opens in a single motion and does not clutter your entrance with redundant technology.

Why Many Homes Do Both: The Gate and Door Bundle

For a lot of Singapore households, the honest answer is not gate or door, but both, each doing the job it is suited to. The gate carries the camera and recognition. The door carries fast, simple entry. Together they cover the two things people actually want: knowing who is outside, and getting in effortlessly.

This is exactly the thinking behind a Gate and Door Bundle. Instead of overspending on a camera lock for a door that cannot use it, you split the roles: a smarter lock on the gate, a slim reliable lock on the door. It tends to be better value than putting a premium lock in the wrong place, and it matches how the HDB layout was designed to work. Bundles start from around S$319, GST-inclusive.

When a Single Lock Is Enough

Not everyone needs two locks. A single smart lock can be the right call when:

You keep your gate open most of the time and rely on the wooden door as your main barrier. In that case, put a good fingerprint deadbolt on the door.
You almost always use the gate as your primary lock and leave the wooden door open for ventilation. Then a smarter gate lock makes more sense.
Your budget is tight and you want to start with the one barrier you use most, adding the second later.

There is no shame in starting with one. The important thing is to match the lock to the barrier you actually use, rather than buying a feature-heavy lock and mounting it where those features cannot help.

How to Decide for Your Own Flat

A short self-check settles most cases:

Which barrier do you lock when you leave? If it is the gate, that barrier deserves the smarter lock. If it is the door, prioritise a reliable door lock.
Do you want to see who is at your entrance? If yes, the camera goes on the gate, full stop.
Do you keep the gate open for airflow? If so, the wooden door is doing the securing and needs a dependable lock.
Do you want hands-free entry for the family? Facial recognition belongs on the outer barrier you reach first.

Run through those and the layout of your own flat will tell you where the smart features belong. In the great majority of HDB and BTO homes, the pattern is the same: intelligence on the gate, simplicity on the door.

The Takeaway

The gate-versus-door question feels like a technical choice, but it is really about respecting how your home is built. The gate faces outward, so it should carry the camera and recognition. The door sits behind it, so it can stay fast and simple. Whether you choose one lock or a bundle, matching the feature to the barrier is what turns a smart lock from a gadget into something you barely think about, because it just works every time you come home.

If you are still deciding between fingerprint and facial recognition for that gate, the two methods suit quite different households, and it is worth understanding the trade-off before you commit.