Algorithms are all around us, guiding business decisions, social policy, and life choices. But the algorithms that organizations use today don't account for individual human objectives, resulting in outcomes that are often detrimental to people and society. The tables are about to turn. B2C marketing professionals need to prepare for a new target audience: the personal digital twin (PDT). This report defines the concept, explains why its time has come, and gives marketers a chance to prepare for this groundbreaking technology.