This chapter provides a foundation for developing practical applications of wearable devices and related technologies for the tourism industry. It is posited that technologies related to the quantified self perfectly match the needs of context-relevant information and therefore offers a number of opportunities to shape tourism experiences. As such, the information collected through this technology enables tourism destinations to understand not only each individual traveler, but also the collective market in much greater detail, and consequently enables them to design much more compelling and efficient tourism services.