Web designer Marko Dugonji? has created a website called "Responsive Typography" that alters the size of the text based on your distance from the screen. As a simple working prototype, Responsive Typography shows us some of the untapped potential of physical interactions with soft wear. Imagine moving away from your screen to get a drink and watching as it magnifies the text so you can read your email from afar, or a computer that goes to sleep when you leave a room and wakes when you return. It’s fascinating to think of computers becoming more responsive to our bodies as a whole, but with the increasing prevalence of facial recognition these interactions could be taken even deeper. If the computer recognized your face was sad, it might change your music playlist to something cheerier, or send your friend a message to give you a call. If it realized you were getting tired, could it tell you when to take a break? Or open the blinds to let in a little more daylight? Dugonji?'s tool shows the range of untapped design potential that is already built into webcams, and bodes for an exciting interactive computing future.