accessing outlook when i’m travelling

I HATE outlook. it has been an ongoing pain the ****. in mid october i went to france. i was at the airport waiting to board for paris and decided to send an email to my girl friend. i couldn't. i was told i needed to enter my code since i wasn't using my home computer. security, you know. the fact the NSA has made that a joke seemed to make the situation rather ironic. as well as frustrating. the message gave the last two digits of my phone number and i was supposed to receive my code by phone so i could use my account. i couldn't. same thing happened in france. i had to use an account i have with my provider but which i never use. i'm going to japan november 21st. i suppose i'll have the same problem. how do i solve it? thanks.