I use public computers when traveling. After I logout of United.com, my Mp # is stored on the computer. Maybe days later when I go to login again, as soon as I type the first # 0 of my Mp number the rest of the number is automatically entered. Often several MP numbers will appear for me to choose from. I still have to enter my password, but I don't like for my number to remain on a shared computer. I'm sure the solution is simple but could someone point me to it?