ICE is In Case of Emergency, and they do recommend that you include a number under ICE in your cell phone address book. This would be a number for someone else to call your emergency contact, in case you are incapacitated.

AT&T is not the only provider of laptop connect cards, I know Verizon also has something similar and probably many others have it. I got mine through AT&T and it works easily and well, but only where AT&T cell phones work. It's basically another "phone number" and mine is a small USB attachment that I plug into the USB port on my laptop. I needed to download some software (AT&T Communications Manager) which I start up when I want to use the connect card. It locates the network and then I can open the internet browser normally.

You need to subscribe to a service to use the connect card, and one of the cheapest was not cheap, about $60 per month.

(Not easy feeding this internet addiction I have, but important when we're travelling and need to keep in touch...)