A visa is a document which allows someone to travel into a specific country and stay there for a set period of time. Generally, a visa may only be issued at the Consulate of the country or, in some cases, at the border. Visas may be stamped or glued directly into a passport or they may be issued electronically (e.g. Australia Visa
). Some countries require everyone who enters to obtain a visa, while others have what are known as reciprocal agreements with certain countries that waive visa requirements. A visa may allow one, two or multiple entries before the expiration date of the visa. It is important to research visa requirements
before traveling internationally to avoid any issues with border control officials and airlines. If a destination country requires a visa and the traveler does not have it in his/her passport, the airline may refuse to board this person on the plane.