Left: The display that carers will see in the Milbotix app. Inventor Dr Zeke Steer quit his job and took a PhD at Bristol Robotics Laboratory so he could find a way to help people like his great-grandmother, who became anxious and aggressive because of her dementia. Milbotix's smart socks track heart rate, sweat levels and motion to give insights on the wearer's wellbeing – most importantly how anxious the person is feeling. They look and feel like normal socks, do not need charging, are machine washable and provide a steady stream of data to carers, who can easily see their patient's metrics on an app. Current alternatives to Milbotix's product are worn on wrist straps, which can stigmatise or even cause more stress.