Virtual assistants are voice-controlled helpers, usually found in smart speakers. Examples of these include Google Home and Amazon's Alexa, which powers its Echo and Dot speakers, as well as the Apple HomePod.
Voice commands are used to prompt different activities, from delivering news reports and playing music, to setting timers and checking train times. As well as saving you time, they could also save you money by keeping your house energy efficient and secure, meaning fewer claims on your home insurance.
In the first quarter of 2017 alone, 3.4 million smart speakers were sold globally, according to analysts Futuresource Consulting. A whopping 24.5 million of these next-gen gadgets are predicted to be sold by the end of the year, according to a report from voice software company VoiceLabs.
While these virtual assistants, electronic home assistants or voice personal assistants (VPAs), are currently found mainly in smart speakers and mobile phones, the technology is gradually branching out to other devices including cars.
'We're not just talking about providing a new voice interface for consumers,' says Simon Bryant, associate director at Futuresource Consulting, in a recent report. 'VPAs are poised to become the new, primary interface for all consumer electronics devices across the board'.
So should you consider buying a virtual assistant? Tech journalist Libby Plummer (@LibbyPlummer) reveals some of the pros and cons.
You can connect your virtual assistant to your smart home security devices to make it easier to keep your property safe. For example, you can connect the Blink security camera system to any Amazon Alexa device and once the Blink 'skill' is enabled on your Alexa app you can give voice commands such as 'Alexa, ask Blink to arm my home security system'.
Virtual assistants can control smart home devices, including next-gen lighting options. You could hook up a smart thermostat such as the Nest to Google Home or Alexa and tell your VPA when you're leaving the house, so that your heating gets turned off. Tests carried out by Nest suggest that UK users can reduce their energy usage by as much 16.5 per cent, saving cash in the long run.
You might just be able to nab yourself a bargain holiday by asking your smart speaker. For example, asking Google Home, 'OK Google, how much are flights to New York?' will prompt the speaker to ask a few follow-up questions about your preferences, after which you'll receive an email about prices from Google Flights. Alexa-powered devices, meanwhile, can be used to search for bargains using travel search engine SkyScanner.
Once you've set your default pick-up location, you can hail a cab from home by simply saying 'Alexa, ask Uber for a ride'. Alexa will let you know how far away the nearest car is, and you can change your pick-up location if you need to. What's more, it'll let you know if there's surge pricing before you book your ride, helping you to get the best price possible.
While it's possible to make both time and cash savings using these virtual assistant devices, they don't always come cheap. The Amazon Echo Plus comes with a price tag of £139.99, while the Google Home is slightly cheaper at £129.
However, Apple's HomePod, which was released in 2018, is pricier at £319. The Amazon Echo Dot is the cheapest of the bunch at £49.99.
'Even if Amazon doesn't do anything questionable with your Echo interactions, it does store them in the cloud, which isn't totally hacker-proof,' says David Emm (@emm_david), principal security researcher at Kaspersky Lab (@kaspersky).
David also emphasises the importance of making sure your home WiFi network is secure by using strong passwords and regularly checking for and installing software updates. Also, smart speaker makers install software onto their devices to make them secure, such as voice command encryption before they're transferred to the cloud.
Voice recognition has come a long way in recent years, and Amazon and Google's tech is among the best so far. However, it's still not perfect, and you might find that you still have to occasionally repeat yourself to make the smart speaker understand your command.
The good news is that the AI-based voice assistants learn and adapt to your voice as you go along.