What is an air card is that the wireless technology that laptops use so that you can use the internet outside and on trains etc.
It is. It uses cell towers to provide the signal just like your phone, and you can use it anywhere there is a good signal. I even used it in the car coming home from our vacation. It also kept me from having to use other people's dial-up and tying up their phonelines. You KNOW how many hours I am here! LOL! It is GREAT!