CHAPTER 1: iButtonTM OVERVIEW I. Introduction Although human–readable labels have been used for ages, it was the advent of computer–readable labels that quickly revolutionized the way grocery stores operate and made possible the overnight delivery of packages. When error–prone –– and time consuming –– key entry was replaced by bar codes, it became convenient to build large databases to help in making accurate and timely decisions. In the next step in the evolution of labelling technology, ink–on–paper bar codes are surpassed by silicon media. With Dallas Semiconductor’s automatic identification technology, a chip becomes the label that can serve as a standalone data base. Attached to an object or carried by a person, the chip identifies and carries relevant information available instantly with little or no human intervention. People access secure areas with convenience, health care professionals accurately create records, and workers efficiently track items as they travel along the assembly line.