I already use low salt soy sauce at home and I just don't use it when I eat sushi, etc. It is rare that I eat Chinese food anymore, but I never eat the friend junk, like Shooting Star mentioned. I love Indian food, but "it" doesn't love me.
I know I should be even more stringent when eating out, but sometimes, I think I am so damn focused on doing everything healthy, that it takes the fun out of everything! On the other hand, I think I am doing well for my age, so I guess I just have to keep fighting the battle.