Kurzweil 8 has a setting that allow you to set a percentage that if the quallity of a scan falls below the number, you are alerted as you scan. I find that you can set the system to scan and read and if thge percentage is set to 98 oir better, the system tells you if you have a relatively poor quality scan. This saves time in the long run since you don't have to check scans that pass the quallity test.