Passport is a document used to identify a person. For use when traveling abroad that will contain personal information such as first name and last name , date of birth , province of birth , gender and nationality, etc. Normally, the general public can only obtain a ordinary passport which is a crimson red cover that can be used for travel or go visit relatives. In the case of studying abroad, you must apply for a visa specifically for study. Foreigners must also obtain a passport before entering Thailand but can’t be used to work because it’s illegal. If your passport is about to expire or has less than six months remaining. You will not be able to use it to travel anywhere anymore as well.