You might already have what's often called a "smart home," with your lights or music connected to voice-controlled technology such as Alexa or Siri. But when researchers talk about smart homes, we usually mean technologies that use artificial intelligence to learn your habits and automatically adjust your home in response to them. Perhaps the most obvious example of this are thermostats that learn when you are likely to be home and what temperature you prefer, and adjust themselves accordingly without you needing to change the settings. My colleagues and I are interested in how this kind of true smart home technology could help people with dementia. We hope it could learn to recognize the different domestic activities a dementia sufferer carries out throughout the day and help them with each one.