PC, using Bluetooth or IEEE 802.11 standards. Smart garments have the look and feel of traditional clothes, and after you unplug the attachments, you can sim- ply toss them into the washing machine. Introduction The following are some examples of the usefulness of smart garments: An army commander could monitor a platoon of soldiers dressed in smart shirt gear. The smart shirts could communicate vital signs in real-time, allowing the commander to see the entire battlefield at a glance and deter- mine who has been hit and who is critically injured and requires immediate attention. On the other hand, it's not difficult to imagine why and how an enemy might want to intercept and alter the communications between the garments and the field commander. Again, we need to view these develop- ments from all angles and ensure that we understand all the possible ramifi- cations SO that proper measures can be taken to prevent the "evil" scenarios. A fire chief could monitor firefighters as they enter a burning building and order them out when the sensors they're wearing transmit data back to the command center indicating that the firefighters are inhaling hazardous fumes or too much smoke, or that the fire is too hot to handle. Those interested in fashion applications will be glad to meet the firefly dress and its associated jewelry. This dress and necklace will actually change luminance and colors, responding to changes in the wearer's physiology as he or she changes moods, so those approaching know whether to proceed with glee or look for another firefly. (Of course, such garments also mean that you don't have to be a professional psychological profiler to determine someone's state of mind.) Or a skirt may change colors and patterns in response to the presence of pollution, rising temperatures, or precipitation. Athletes will benefit greatly from smart garments. A cyclist, for instance, could be attired in a smart racing suit, dotted with moisture, temperature, and pulse sensors. Such a suit would have warned his team manag