pteron--
"Home" is how our home # is flagged in my cell phone.  However, I chose a different approach to notification.  it was thoroughly discussed in this thread last year:   
Emergency Info Card thread I still carry mine; I need to update my meds list, & review my wife's card, but the fundamentals remain the same.
ICE is interesting, but not universally known.  How familiar a first responder (Police, Fire, EMS or even a good Samaritan) would be is questionable in my area.  The card is clearly labeled, eye-catching (visible when viewing my driver's license), & does not require batteries.   <img src="/images/graemlins/smile.gif" alt="" />
David