We are constantly being monitored. Frequent shopper cards mean that grocery stores know what we’re buying. Our activity on Facebook determines what ads we see. And if we run a red light, or speed, traffic cameras capture it. Well, Denver IT professional Chris Dancy figures if companies and governments benefit from monitoring us, there’s no reason we shouldn’t benefit ourselves. Dancy’s a pioneer in the “quantified self movement.” He tracks virtually everything about his life, with the help of sensors on his body and throughout his home. Dancy speaks to Ryan Warner.