One could use a hash set to identify and exclude known child porn images. Having done that, the law may require one to report it to law enforcement. See the '

One could use a hash set to identify and exclude known child porn images. Having done that, the law may require one to report it to law enforcement. See the 'Child Exploitation Hash Sets' available here: http://www.nist.gov/oles/forensics/forensic-database-tech-digital-evidence-table.cfm http://www.nist.gov/oles/forensics/forensic-database-tech-di...