As you leave for work, you yell “lock” and “camera on” to keep the house secure, before telling your vacuum to clean the bedroom carpet while you're out. It's not a sci-fi film - the technology is available now. But do we really want our homes to be controlled by technology?

With Apple's HomeKit and Google's Nest Labs, the smart home is becoming part of everyday life. With the market estimated to grow to $51.77 billion by 2020, even the humble vacuum cleaner is getting a smart makeover with AirRAM.

Sales of home automation systems have been predicted to grow to around $9.5 billion by 2015, and then rocket to $44 billion by 2017. With the weight of Google behind Nest, people are wising up to the idea of a connected home, and Sentri hopes to be the one device to rule them all.

According to a survey conducted by field marketing agency Gekko, over a quarter of the UK are uninterested in having digitally connected smart appliances in their homes. Price and functionality are still the main barriers for people refusing to adopt the smart home model.