ICE your Phone

Create a cell phone entry labeled ICE (for In Case of Emergency). This is a worldwide program (it started in Britain) to make it easier for rescue responders to make contact with the right people in the event of an emergency.

http://www.iceyourphone.org/

See also the Snopes article on the so-called ICE Hoax e-mail that has been passed around. There are no viruses associated with using ICE on your phone. The article explains that ICE is only one measure you should take to identify yourself, not the only measure.

http://www.snopes.com/crime/prevent/icephone.asp