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Interstate Identification Index (III)
The Interstate Identification Index (III), known as "Triple I," is an "index-pointer" system for the interstate exchange of criminal history record information. Under III, the FBI maintains an index of persons arrested for felonies or serious misdemeanors under state or federal law. (A serious misdemeanor is generally one that results in a jail sentence of one year or more.)
The index includes identification data (name, birth date, race, sex, etc.), and FBI and state identification numbers (SIDs) from each state that has information about an individual.
Search queries from justice agencies nationwide are transmitted via state telecommunications networks and the FBI's National Crime Information Center (NCIC) lines. Searches are made by name and other identifiers.
The automated process takes about five seconds. If a hit is made against the index, record requests are made using SIDs or FBI numbers. Data are automatically retrieved from each repository with records on the individual. The records are then forwarded to the requesting agency.
To participate in III, states need an automated criminal record system compatible with the III system and capable of responding automatically to interstate and federal/state record requests. III held the criminal histories of more than 75.4 million individuals as of December 1, 2011.
Currently all 50 states and the District of Columbia participate in III. Seventeen states also participate in the National Fingerprint File (NFF). NFF states assume responsibility for providing III-indexed records for criminal and noncriminal requests. The 17 NFF states are Colorado, Florida, Georgia, Hawaii, Idaho, Kansas, Maryland, Minnesota, Missouri, Montana, North Carolina, New Jersey, Oklahoma, Oregon, Tennessee, West Virginia, and Wyoming.
III use for noncriminal justice purposes is overseen by the National Crime Prevention and Privacy Compact Council. The Council was created when Congress passed the Crime Identification and Technology Act, in which the Privacy Compact was embodied, in 1998.
Criminal Justice Information Services (CJIS) Division, Federal Bureau of Investigation
Map of III/NFF states