Teramind does not use any finger printing database. Instead, our Policy & Rules Engine detects content in real-time. You can detect content inside a file using text-match, binary-match patterns, regular expressions, keywords etc. To learn how to detect content inside a file, email etc. check out the Content Sharing Rules: What Contents Trigger the Rules? section on the Rules Guide.
You can also detect files based on a file's tag (file property/metadata). To learn how to detect sensitive files with file properties / tags, check out the File Properties section on the Content Sharing Rules > Files section on the Rules Guide.