This invention integrates with a country's customs and immigration system to issue an electronic visitor's visa, and to validate periodically, electronically a visitor's visa within the country's borders. A computer-encoded visa card is created and issued to the visitor at the country's overseas consulate. Pertinent visa application information is embedded in the issued card. Cryptographic technology is used with the card to maintain privacy, as well as to reduce fraud and other misuse. The card is used as the visitor's official identification document whilst in the country. During the visitor's stay, at specified intervals, the visitor registers with self-service kiosks, which are placed at various locations within the country. The kiosks are securely integrated with the customs and immigration database.