Tools of this nature are frequently flagged by antivirus software as potentially unwanted programs (PUPs) or malware because they can be used to create malicious software that restricts user access to their own files. remove a winlocker from a system? winlocker builder 0.6 free download - SourceForge
The creator would set a specific numeric or alphanumeric code. The victim would need to type this exact code into the locker to restore system access.
(versions 6.1 and 7.0) are marketed for "kiosk management" but are often flagged by security scanners for having evasive traits Safety Warning