Mainly to travel to different countries, passports are very important and carry almost all of you personal information (except for your secrets). The passport that we have made is in black and white and holds some of your personal information. Some of the information it holds is your name, gender, age, home country, your picture, small description of yourself, and your signature. The passport is very important for your journey, without it you would not be able to go there. Passports allow you to travel to other countries and carry your personal information just in case an emergency, like getting arrested or ticketed in a different country. The countries don't carry your information because your not a citizen there. Our county should have them because first, we are going to a completely different planet and need something to carry our personal information. If we disappear on the planet, our peers will know everything about us that might help find them. That is why we will need passports on mars and they are very important in general too.