The digital revolution has already hit our homes - with almost every type of device having a 'smart' alternative available now. So if you're one of the early adopters, how much of that tech in your house will be sticking around - and how much will be abandoned?  In this episode we speak to the companies battling for control of our homes - including Samsung, Philips and Amazon. Amazon's Chief Technology Officer strongly makes the case for voice, but admits voice-controlled devices won't control everything and will only form part of the mix.  We'll also hear how technology is changing how our houses are built - and whether advancements can help solve the housing crisis. Do you really need windows is flatscreen panels can easily switch between glorious vistas all around the world and provide us with natural spectrum light?