Smart Home Security Basics: What to Buy First

Smart home security has become practical and genuinely affordable. You don’t need a professional installer or a monthly monitoring contract to have meaningful protection. Here’s what actually matters.

Start at the front door

The front door is both the most common entry point and the most visible to neighbours and passing traffic. A video doorbell covers it effectively. You get motion alerts, a live view, a recorded log, and the visual deterrent of visible cameras. Most smart doorbells integrate with Alexa, Google Home or Apple HomeKit, so you can see who’s at the door from anywhere.

Installation is straightforward: most video doorbells are wire-free (battery-powered) or work on existing doorbell wiring. Battery models need recharging every 1–3 months depending on usage.

Indoor camera placement

A single indoor camera placed to cover the main entry to your home (the hallway, or the door from the garage into the house) gives you the most useful coverage without filling your home with surveillance equipment. Position it at head height, with a clear line to the front door and ideally angled to capture faces.

For most homes, one indoor camera plus a video doorbell is sufficient. If you have a back door or side access, add a second outdoor camera there before adding more indoor coverage.

Outdoor cameras: what to look for

An outdoor camera needs to be weatherproof (IP65 or better), have night vision (infrared or colour night vision for better image quality), and offer local or cloud storage for recordings. Motion zones — the ability to define which part of the camera’s view triggers an alert — are essential for outdoor cameras to avoid constant false alerts from passing cars or moving trees.

Motion sensors and smart alarms

Standalone motion sensors connected to your smart home hub trigger alerts when movement is detected inside the home. They’re inexpensive ($15–30 per sensor), easy to place, and work well as a supplementary layer when you’re away. Pair with a smart alarm that sounds locally — even without monitoring, the noise is an effective deterrent.

Smart locks: are they worth it?

Smart locks add convenience (entry by code or app, auto-lock after a set period, log of who entered and when) but require battery maintenance and good installation. If you frequently have tradespeople, cleaners or guests, a smart lock pays for itself quickly in reduced key-cutting and the ability to grant temporary access codes remotely. Standalone smart locks that retrofit over your existing deadbolt are the easiest to install.

Privacy: a note on camera placement

Indoor cameras should never be placed in bedrooms, bathrooms or any space where you have reasonable expectation of privacy. Outdoor cameras must not capture public spaces (roads, pavements, neighbours’ properties) beyond your own boundary in a way that records individuals — this has legal implications in most jurisdictions.