"Passport power" refers to the strength and value of a country's passport in terms of visa-free or visa-on-arrival access to other nations. A powerful passport allows its holders to travel to many countries without needing a visa, making international travel easier and more convenient. Countries are often ranked based on their passport power, with rankings determined by the number of destinations their passport holders can access without a visa. For example, passports from countries like Japan and Singapore typically rank high, offering extensive travel freedom compared to those from countries with more restrictive visa policies.