I.C.E. Your Cell Phone

Not too long ago, I got an email from a friend about "I.C.E."-ing my cell phone. The acronym stands for "in case of emergency," and the idea is that if someone is trying to help you, they can just call the number for "I.C.E." stored in your contact list to notify someone on your behalf. It's a good idea and I've been putting it off, but I'm going to do it now.