ABSTRACT
This chapter focuses on the sensors relevant to interactive applications and their typical modes of use. Experimenting with such sensors has never been easier. It presents the variety of available sensors and how they are often used in interactive systems. The chapter addresses signal processing, recognition techniques, and further considerations in designing sensor and recognition-based interactive systems. Probably owing to the importance of sensing technology in security applications, many devices and techniques exist to sense either motion or a person’s presence. Range sensors calculate the distance to a given object. Such detectors can be used as occupancy detectors, and they are also useful in motion- and gesture-driven interfaces. Designers of sensing-based interactive systems would probably most like a low-power, wireless, inexpensive three-dimensional position sensor that does not rely on the installation of complicated infrastructure.
