The Next Wave of Computing 49
Aside from convergence among cell phones, PDAs, and mobile
entertainment devices, some other applications such as consumer
electronics, industrial handheld equipment, and home automa-
tion are expected to converge to a universal mobile device as well.
Consider remote controls for televisions, digital videodisc (DVD)
players, and stereo systems. These small wireless devices only dif-
fer in the frequency used. Moreover, other electronic devices may
also be remotely controlled, either from within a small room using
direct wireless communication or from a remote site via a network.
For example, a digital surveillance camera with a built-in motion
detection sensor or a temperature sensor can possibly send images,
data, or full ...