Step 1> Get out your cellphone
Step 2> Find your pri1 emergency contact
Step 3> edit that contact to begin with the letters ICE, for In Case of Emergency
Step 4> Rinse, repeat for pri(N) contacts, using the ICE(n), as in ICE2, ICE3, etc
Now you have helped anyone who is trying to help you in an emergency quickly find the right number to call on your phone (assuming they are able to get in there and you are not able to talk or help them).
Why? Most people do not mark their contacts with the thought of helping a stranger help them in an emergency. Read the details of the original concept (and offered add-on services) here.
I totally agree that this is a really good idea, and is also something which paramedics etc are pushing here in the UK.
However - I do have one question. I use a Windows Mobile Smartphone (and very pleased with it too!), but have set it to lock after 1 min. You need a PIN to unlock it. I don't really want to put a sticker on the back of the phone (it'll look like my mum's who has her own number there!). I've resorted at the moment to writing it on the back of a business card and displaying it fairly prominantly in the wallet - but I'm aware that this isn't "standard" and thus may be missed.
Any ideas for anything better?