What does ten seals mean?

Ten fingerprints means that you provided fingerprints of all your fingers instead of just two. Have you ever lost or stolen your American visa? If you answer "Yes", you must provide the year of loss or theft.

Ten fingerprints means that you provide fingerprints of ten fingers instead of just two. Have you ever lost or stolen your American visa? If yes, you must provide the specific year of loss or theft.

Actually, this is the fingerprint certificate used on the visa.