Which of the following is NOT a function of NCIC?

The function of the National Crime Information Center (NCIC) does not include data entry by the public. NCIC is designed as a law enforcement tool, providing critical information and databases that assist in criminal investigations and law enforcement activities. The primary users of NCIC are law enforcement agencies, which maintain and manage the databases available for their use.

Tracking stolen property is a significant function of NCIC, as it allows law enforcement to input and retrieve data regarding stolen goods, vehicles, and other items, thereby aiding in recovery efforts. Additionally, NCIC provides criminal history information, which is essential for background checks and investigations. Another key function is facilitating communications between law enforcement agencies, enabling efficient sharing of information related to criminal activity across different jurisdictions.

In summary, the correct answer highlights that public data entry is not within the scope of NCIC's functions, as it maintains a secure environment tailored to the needs of law enforcement professionals.