This feature can only be modified in Professional and Enterprise Editions.
With the Allow non-printable characters in passwords setting you can specify whether Identity Finder will search for passwords that contain non-printable characters that are within the ASCII range 0 to 31. When AnyFind Passwords is enabled, Identity Finder will search all locations you specify for passwords, but to reduce false positives will ignore any strings that look like passwords but are probably not truly passwords because they contain non-printable characters. If you want to include the strings with non-printable characters as password matches, select this option.
Select the checkbox if you want to allow non-printable characters in passwords:
To view or change these settings, click the Settings button on the Tools and Options ribbon.