With the expansion of WiFi into the majority of tech savvy homes and businesses, it would seem natural that the signal be used for more communication than just the computer network. Ascom is doing that, with their i75 Messenger.
The Messenger can be described as a WiFi walkie talkie, but with advanced messenger technology. The phone also features a nice large display, four way navigation buttons, phone conferencing, and a virtual SIM card which lets you move between handsets quickly and easily.
via
