As officers, we contact people in our cities every day in a wide variety of settings. Each one of these contacts yields great information that could later become the crucial piece of an investigation.
Every traffic or pedestrian stop gives us great identifying information on both a person and his or her vehicle of choice. However, if we don't record this information, it is likely lost forever. That is where we as officers tend to fall short.
All departments have some way of recording information without making it a crime report. If a contact doesn't warrant a full-blown investigation, it can still be recorded for future usefulness. Police agencies across the nation have various names for these records, such as field contacts, field interviews, pedestrian contacts, and so forth. No matter what they are called, they can quickly transform from an ordinary slip of paper into a treasure worth its weight in gold.
Some of the best leads come down to a suspect having been documented or associated in a totally unrelated case.
For example, let's say an officer is investigating a known-suspect robbery. One of the first steps in his or her investigation would be to check prior contacts with that individual. If an officer had stopped the suspect a few nights prior for traffic violations, the investigator would have a great place to start his or her investigation. Plus, he or she would also have a vehicle description to further enhance their case. If that suspect was contacted with a few of his friends, the officer would have potential accomplice information as well.