The most important item for an overseas trip is, without question, the passport. Yet even though people pack it every time, they often do not actually know much about it. Why must a passport have more than six months of validity left? Who decides the color of the passport cover? If you lose your passport abroad, where should you go first? We take a look at the stories behind passports that feel familiar yet prompt curiosity.

Passport validity of six months: why?

“A passport must have at least six months of validity remaining.” Anyone who has prepared for an overseas trip has likely heard this at least once. To state the conclusion first, ‘six months of passport validity’ is not an internationally set standard.

The International Civil Aviation Organization (ICAO) provides international standards for passport size, electronic chips, the machine-readable zone (MRZ), and security elements, but it does not stipulate the remaining validity period. The validity required for entry is decided by each government based on its immigration policy.

This is also why standards differ by country. The United States, Thailand, and Indonesia require at least six months of validity at the time of entry, whereas many European countries, including France and Germany, require at least three months based on the planned date of departure. This is why the Ministry of Foreign Affairs advises travelers to check the entry requirements of not only the destination but also any transit countries before departure.

Then why do many countries use six months as a benchmark? There is no unified official international explanation. However, countries consider unexpected extensions of stay and therefore require a remaining validity period as an entry condition. If a return is delayed due to an accident during travel, hospitalization, flight cancellations, or natural disasters, and the passport expires while abroad, verification of status and departure procedures can become complicated.

Many travelers discover passport validity issues not at the destination's immigration desk but at the check-in counter of the departure airport. Airlines check each country's passport, visa, and entry rules through the International Air Transport Association (IATA) travel information system ‘Timatic’. If they transport a passenger who does not meet entry requirements and that person is refused entry, the airline may bear the cost of repatriation and administrative responsibility.

Another point of caution is the rules of transit countries. Even if the final destination requires only three months of validity, boarding can be denied if a transit country applies a stricter standard. In other words, what must be confirmed before travel is not simply the passport expiration date, but the remaining validity required by both the destination and any transit countries.

Why are there no colorful passports?

Seeing that passport colors differ by country, one might expect an international standard, but in reality there is none. Each government decides passport designs and colors at its own discretion.

South Korea changed its cover from green to navy when it introduced next-generation e-passports in 2021. The Ministry of Foreign Affairs explained that it changed the color while overhauling the design and strengthening security. Existing green passports can continue to be used until they expire.

Many European countries use burgundy covers because, in 1981, the European Community (EC) adopted a common format using a burgundy cover to enhance uniformity among member state passports. Many European Union (EU) member states have continued this practice.

It is also notable that passport colors worldwide tend to be dark. This is presumed to be the accumulated result of choices by countries that consider long-standing practice, the identifiability of official documents, and durability.

Why do entry stamps go on any page?

There is no international rule governing the exact location or page where an immigration officer places an entry stamp. However, there is a reason officers typically look for a blank page.

Passports record not only entry stamps but also long-stay visas and various entry permits. If only specific pages are used repeatedly, space may run out quickly, and already issued visas or important records could be obscured. Efficient use of blank space is therefore standard practice.

Even this scene is gradually disappearing. Countries including South Korea, Singapore, and Australia are expanding automated gates and electronic entry and exit record systems, increasingly omitting stamps or providing them only upon request. This is because border records can be managed in computer systems rather than on paper passports.

The absence of a stamp does not mean there is no immigration record. Dates and places of entry, as well as travel history, are stored electronically in immigration systems. In some countries, an entry stamp may still be needed for tax refunds or to prove presence. In such cases, in some countries you can request a stamp from the officer and receive it.

Lost your passport while traveling?

When people lose their passport abroad, they usually think first of the Korean embassy. However, the Ministry of Foreign Affairs first recommends going to the local police station. A passport is not just an ID card but an official document issued by a state. Therefore, an official record of the loss is needed first.

A loss report issued by local police is often required not only for the issuance of an emergency passport but also for travel insurance claims and local immigration procedures. If the passport is misused in a crime, the report can serve as evidence of when it was lost. After filing a police report, you should visit the nearest Embassy or Consulate General of the Republic of Korea to obtain an emergency passport.

In some countries, even after receiving an emergency passport, you must verify entry records with the local immigration authority or complete separate departure procedures. An emergency passport is a travel document issued by the Korean government; it does not automatically reconcile local immigration records.

Emergency passports may also be subject to restrictions on entry or transit depending on the country. If you plan to travel onward to another country or transit through a third country rather than return home, you should confirm in advance whether the relevant country accepts emergency passports.

The most practical preventive step recommended by the Ministry of Foreign Affairs is surprisingly simple: store an image of the passport data page on your mobile phone. Having the passport number and issuance details readily available can streamline the emergency passport issuance process.