US-VISIT biometric procedures apply to international travelers holding a non-U.S. passport or visa. Enrollment Requirements
The U.S. Department of Homeland Security's US-VISIT program provides visa-issuing posts and ports of entry with the biometric technology that enables the U.S. government to establish and verify your identity when you visit the United States.
In many cases, this process begins overseas at a U.S. visa issuing post, where a traveler's biometrics—digital fingerprints and a photograph—are collected and checked against a watch list of known criminals and suspected terrorists. When the traveler arrives in the United States, we collect the same biometrics to verify that the person at our port is the same person who received the visa. Immigration officials use this information to help them make visa-issuance and admission decisions as part of the visa application process or entry inspection.
Unlike names and dates of birth, which can be changed, biometrics are unique and virtually impossible to forge. Collecting biometrics helps the U.S. government prevent people from using fraudulent documents to enter the country illegally. Collecting biometrics also helps protect your identity in the event your travel documents are lost or stolen.