Valdimar Sigurdsson (Reykjavik University) and Asle Fagerstrøm (Kristiania University College) are guest editors for a special section on “Health, Technology, & Behavior Science” in Perspectives on Behavior Science. The aim of this section is to provide reviews and empirical research that integrates the latest technological innovations and behavior science. The contributors in this special section demonstrate that behavior science can aid an understanding of why people do or do not engage in a healthy lifestyle and help identify what is needed to design a successful health behavior intervention through the use of technology