introduction MS check template duplicate during erollment
- if start to enroll a new finger, when press finger at the first time, windows hello will call idenitfy fun to check this sample is match or not match. if not match, this sample will update to template. if match UI tips user try to use another finger.
- before commit template, windows hello will call engineadaptercheckfordduplicate to check again. here is MSDN introduction for this function
The Windows Biometric Framework calls this function before committing a new enrollment template to the database of a biometric unit. The purpose of this function is to prevent collisions in the engine adapter matching space. Collisions can result in false-positive matches.