For those that travel internationally, the concept of a dual SIM card phone is intriguing. With the Korean-born DUO Atom, the bar is raised even further. It has a built in gravity sensor, and can tell which direction the phone is facing. Why is that important? Depending on which way it’s facing, the phone will choose the appropriate SIM card. It even switches the screen and keypad around so you can avoid the embarassment of having to noticably hold your phone the wrong way. Just don’t go jogging, mountain climbing, bicycle riding, skiing, or anything else that involves the phone possible being turned the wrong way.