BBC Science Focus

SMART HOME SECURITY

IF YOU’RE GOING ON HOLIDAY, OR ARE JUST OUT AT WORK ALL DAY, YOU MIGHT BE TEMPTED TO BUY SOME SMART HOME SECURITY. TECH EXPERT HUGH LANGLEY GIVES US THE LOWDOWN

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WHY WOULD I WANT A ‘SMART’ SECURITY SYSTEM?

Home security no longer means slapping a big, ugly box to the side of your house, nor does it demand an expensive profession­al to hardwire your new system in place. The smart home has ushered in a DIY security revolution: you can now build a decent security system in less than 30 minutes, with your smartphone acting as the controller. Smart home security systems beat traditiona­l ones not just by eliminatin­g hefty installati­on fees and long-term contracts, but in sheer convenienc­e too.

WHAT DO I NEED TO GET STARTED?

Smart home security encompasse­s a wide range of gadgets, from cameras to doorbells, sensors to smoke alarms – but don’t let it overwhelm you. Sure, maybe you want the full Fort Knox, but for the humble homestead a couple of indoor cameras and sensors can do the trick. Most smart home systems revolve around a hub, which connects to your Wi-Fi and talks to all the other ‘smart’ devices around the house. Cameras and motion sensors are the most common of these, but you can also add water leak sensors, smoke detectors and glass-breaking sensors.

WHAT’S SO SMART ABOUT THEM?

Smart systems give you more insight into what’s happening than traditiona­l systems, including notificati­ons on your phone when sensors are triggered, and video clips of any suspect activity taking place. Using your phone you can arm/disarm the system remotely, and, if you have any smart locks, lock your doors with the tap of an app. Some smart locks even let you create ‘virtual keys’ so friends and family can enter the home when you’re not there, while cameras and doorbells can be trained to recognise familiar faces and let you know who’s knocking.

“Some smart locks let you create ‘virtual keys’ so friends can enter the home when you’re not there”

SHOULD I BUY A PACKAGE SYSTEM?

It depends on your setup. Companies like SimpliSafe offer comprehens­ive systems made of a central hub and a few sensors, with the option to add cameras, key fobs and sirens as desired. If you’re not sure how many devices you need, look out for ‘starter kits’. These serve as a great jumping-off point, and are often better value than buying individual devices. And while most smart security systems are designed to keep drill usage and cable-running to a minimum, some do offer profession­al installati­on should you still want it.

WHAT IF I RENT OR LIVE IN A FLAT?

Smart home companies are gradually adapting to renters and flat-dwellers. Still, you’ll hit some limitation­s. For example, an outdoor camera might not be an option in a shared building, and you’ll want to check with your landlord before chopping off the deadbolt for something smarter. Luckily, some security systems work great for flats too, as do many of the indoor cameras and sensors you can pick up individual­ly. We’re even starting to see smart doorbells that are perfectly designed for apartment living.

HOW IMPORTANT ARE HOMEKIT, ALEXA AND GOOGLE ASSISTANT?

This matters more if you’re buying devices piece by piece, as you’ll want a certain amount of interopera­bility to keep things running and reduce the number of apps. My advice is to choose the system that best works for your home, and worry about the rest later. Luckily, many major systems support both assistants anyway. If you’re a die-hard Apple user, you can build a decent security system around its HomeKit platform, thanks to a growing number of individual devices that play nicely.

ARE THERE A LOT OF ONGOING FEES?

There can be. Most systems offer a level of service for free, but some will require monthly payments to let you store video footage in the cloud or access special features like person detection. You don’t need all the bells and whistles, but you should consider paying for profession­al monitoring if your system supports it, so you can dispatch the authoritie­s if needed. Paying for cellular backup is also worth it, in case your Wi-Fi goes down.

HUGH LANGLEY (@HughLangle­y) Hugh is editor at The Ambient, which is dedicated to demystifyi­ng smart homes, and Wareable, which covers wearable technology.

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