ever wanted to use that communicator on star trek....... the button press on the chest, known as a lapel, shout a name and be connected to that person ?
well now you can, thanks to a technology firm it has created a network using WiFi and servers to enable it to be used in various areas such as hospitals..
source: BBC news
http://news.bbc.co.uk/1/hi/technology/3628517.stm