Currently, border officers interview arriving travelers to determine why they came. They collect biographic information such as names and addresses, fingerprints, and digital photographs, which are biometrically matched against data previously provided to the U.S. with the visa application. For departing travelers, air and sea carriers must provide biographic manifest data that border agents can match against the arrival data to determine who left on time and who overstayed. Anyone guilty of overstaying six months or more is barred for three years from re-entering the U.S.; overstay a year or more and it's a 10-year ban.