Following Nokia's initial foray into dual mode cellular/WiFi phones, phone giant Motorola is entering the marketplace. Motorola's phone automatically switches to WiFi mode if you enter a WiFi hotspot, meaning that you save your cellular minutes and your cost of calling will be lower overall.
WiFi "communicators" are entering the marketplace, and are being used in large institutions like hospitals and city libraries, where staff have to be in constant communications. Traditional walkie-talkies and radios don't work well in those situations, but WiFi provides crisp, clear voice messaging. One hospital has saved time and money by giving staff WiFi communicators they wear around their neck.
Does it sound like something out of Star Trek? Well, it is. But this is not science fiction, it's a reliable commercial product that is saving time and money. Does your community have a WiFi hotspot plan? Without ubiquitous WiFi, these new devices won't work reliably.