Which smart home gadgets earn their place

The promise of a connected home is that the house does small things so you do not have to. The reality for most people is a drawer of devices that each needed their own app, their own account and their own evening of setup, and that now do something slightly less convenient than a switch. The difference between the two outcomes is not the brand or the budget. It is whether the device removes a step you actually repeat, or adds a step you did not have. Four categories pass that test reliably. Most of the rest do not.

The test: does it remove a step you repeat?

Before anything else, apply one question to any connected device: what do I do today that this stops me doing, and how often do I do it? A light you switch on and off twice a day, in the dark, with your hands full, is a real repeated step. A kettle you fill by hand anyway is not — a connected kettle still needs filling, so the app saves you the walk and nothing else. The devices people keep are the ones that pass this test every day. The ones in the drawer failed it in the first week and the app was never the problem.

• Count how many times a week you actually perform the step it replaces.
• If the device still needs you to be physically present, the connection is doing very little.

Lights, because they are the step you repeat most

Lighting is where a connected home almost always starts and the one place it reliably works, because switching lights is something a household does dozens of times a day in a dozen places. The useful part is less about colour than about schedules and groups: an evening that comes on by itself, a whole floor that goes off with one instruction on the way to bed. The one thing worth checking before buying is what happens when the network is down — a good bulb still answers its wall switch, and a poor one becomes a fitting that cannot be turned on.

Plugs, for the things that were never going to be smart

A connected plug is the cheapest device here and often the most used, because it makes a schedule out of anything with a simple on-off switch: a fan, a lamp, a water pump, a charger you want to stop at night. It is also the honest test of whether you need anything cleverer. If a plug and a schedule solve the problem, the connected version of the appliance itself is usually buying you an app and a firmware update. Check the current rating before using one on anything that heats, which is the one safety point in this entire category.

• A plug plus a schedule replaces a surprising share of what connected appliances advertise.
• Check the rating in amps before using one on a heater, a kettle or an iron.

Cameras, with the question of where the recording lives

A camera earns its place when the house is empty often, and the decision is less about resolution than about storage. Footage either stays in the house on a memory card or a local drive, or it goes to a company server and usually behind a monthly subscription. The first keeps your footage yours and stops working if somebody takes the camera. The second survives theft and means a third party holds video of your home. Neither is wrong; what is wrong is discovering which one you bought a month later. Resolution beyond a point adds very little; where the recording sits changes everything.

Speakers, and the one thing they are genuinely for

A voice speaker is sold on everything and used for about four things: timers, music, weather and switching off the lights. That is a modest but real list, and the timers alone justify one in a kitchen. What it is not is a control centre. Asking a speaker to run a house full of devices from different makers is where the frustration starts, because the instruction has to be phrased the way the speaker expects rather than the way you think. Treat it as a hands-free switch and a kitchen timer and it is excellent. Treat it as the brain and it will disappoint.

What to avoid, and why it keeps being sold

The pattern among devices that end up unused is that the connection replaces a step that was never the slow part. A connected lock that still needs you at the door. An appliance whose app only reports what its own panel already said. A sensor that sends a notification nobody acts on. These sell well because the feature list is long and the question in this article is never asked on the box. Before buying any of them, write down the step it removes. If you cannot finish that sentence, the drawer is where it is going.

What to try, in order

1. Write down the step the device removes and how many times a week you take it. If you cannot, stop there.
2. Start with lights and plugs, which cover most repeated steps for the least outlay.
3. Check what every device does when the network is down, especially anything attached to a light fitting.
4. For a camera, decide first whether the footage stays in the house or goes to a server, and what that costs monthly.
5. Keep to as few apps and accounts as you can, because every extra one is an evening and a password.
6. Treat a voice speaker as a hands-free switch and a timer, not as the thing that runs the house.

What to take from this

A connected home works when each device removes a step somebody repeats, and collects dust when it adds one. Lights and plugs pass that test for almost everybody, a camera passes it for a house that is often empty, and a speaker passes it as a timer and a switch. Everything else deserves the same one-sentence question before it is bought, and most of it cannot answer.

Common questions

Do I need a hub, or will the apps do?

For a handful of devices the apps are fine. A hub starts to matter when you want devices from different makers to act together, or when you want things to keep working while the internet is down, because a hub can hold the schedule locally. Below about half a dozen devices it is usually an extra box.

What happens to my lights if the internet fails?

It depends on the bulb, and it is the most important question in this category. A good one keeps answering the wall switch and any schedule already stored in it. A poor one becomes a light you cannot switch on, which is a problem you will only meet at the worst moment.

Are connected devices a security risk?

Any device on your network is a door, and the ones that matter are the ones with a camera or a microphone. Keep them on updates, change the default password, and prefer makers who say plainly where recordings are stored. A plug controlling a fan is a much smaller question than a camera in a bedroom.