There are many handy tools that can be used for communication today. Not only do these technological devices provide ease and convenience in daily life, but there are some circumstances where the ability to communicate rapidly aids a person in a life or death situation.
First off, there is a gadget that most people have these days; a cell phone. By using a cellular device connected to a telecommunications network, people are able to get in touch with virtually anyone at a moment’s notice. Particularly in regards to the smart phones, capabilities include the aforementioned calls, checking emails, quick internet access, cameras, etc… These products are marketed to individuals, business owners, corporations; literally everyone can find a use for these devices. They would also be most helpful in law enforcement, corrections, and the courts because everyone needs access to this kind of information as soon as possible; be it to help a client or whatever the responsibility.
Another imperative communications system that can be obtained commercially is a radio communications system. Marketed generally to security forces, truck drivers, and the like, these devices provide instant communication with whoever is on the other end. Probably most useful in the environment of law enforcement, a dispatcher will be able to talk to the officer as soon as there is an emergency, no voicemail, down towers, or anything to mar the signal.
All in all, people use communication systems every day, in all capacities, regardless of job, educations, or any other distinguishing factor. While some devices and systems fit with one role better than another, at the end of the day the nation, and even the world, would be substantially handicapped without them.