Visas can be categorized by the method of application, which significantly impacts the processing experience. Online applications are increasingly popular, allowing applicants to complete forms and upload documents digitally, often resulting in quicker processing times. Paper applications require filling out traditional forms and submitting them to a consulate or embassy, which may involve mailing documents or delivering them in person. Some visa types necessitate in-person applications, where applicants must attend an interview or provide biometric data. Visa on arrival is another option offered by certain countries, allowing travelers to secure their visa at the border, albeit with specific eligibility criteria. Lastly, applicants can use third-party services or agencies to manage the application process on their behalf, simplifying the experience for those unfamiliar with visa requirements. Understanding these methods can help travelers choose the most efficient route to secure their visa and ensure a smoother travel experience.