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Mobile Print ID

Fingerprint readers you can carry with you improve officer safety and productivity.

January 30, 2015  |  by Frank Fernandez

Photo: Crossmatch
Photo: Crossmatch

As a state trooper approached a vehicle during a routine traffic stop, he likely imagined things would follow a typical course. Driving with his headlights off would have earned the driver a citation—or perhaps just a warning—and a "be more careful and have a nice night." But as the driver handed the trooper a South Carolina driver's license, the alert trooper noticed the driver also possessed a bank card bearing a different name.

Using a Mobile ID system, the trooper collected a fingerprint sample from the driver and submitted the print to the state's database, which also forwarded a query to the FBI's Repository for Individuals of Special Concern (RISC) database to check for a match. Within seconds, the trooper received a "red" response—a highly probably match with an active warrant. The driver was wanted in Georgia in connection with a murder and aggravated assault—a warrant that had been outstanding for more than eight years.

The trooper, now taking proper precautions in dealing with a possibly dangerous suspect, was able to safely take the driver into custody. Thanks to Mobile ID technology, this state trooper was able to turn a routine traffic stop into the successful apprehension of a possible murderer and removal of a potentially violent public safety threat.

Stories like this one are becoming more and more common, though no less powerful, as the deployment of Mobile ID technology virtually explodes across law enforcement agencies in the U.S.

Enhanced Functionality

Though mobile fingerprint technology has been in use in law enforcement for nearly a decade, continued enhancements are making the technology viable for agencies of all sizes. The devices themselves are now more compact and lighter, often weighing slightly over a pound, making them very convenient for in-the-field use. The technology driving the devices has also continued to improve, including wireless connectivity, extended battery life, and expanded memory capacity. All of this adds up to more precise scanning, faster searching, and more reliable match results. Finally, the cost of these new solutions now makes the technology accessible for both large-scale deployment and small law enforcement agencies.

Behind the scenes, the databases these devices search have expanded. In 2011, the FBI launched its Repository for Individuals of Special Concern (RISC) database. The RISC database is a subset of the criminal fingerprint records in the FBI AFIS database—a type of "most wanted" list, containing fingerprint records of terrorists, violent criminals, child molesters, and other criminals designated as Individuals of Special Concern. One of the chief reasons for the development of this list was to create an optimized, quickly searchable list of the nation's most dangerous and concerning criminals for in-the-field agents using Mobile ID systems. Today, the RISC database can return results in just 10 seconds.

Recognizing the value of the FBI RISC database, the model has been copied by many states. Some have honed their targeted lists even further, often including just the index and middle finger (those most likely to yield prints in the field) to further enhance the speed of match searching in the field.

Game-changing Technology

Today's widespread use of these enhanced Mobile ID devices is truly changing the game for law enforcement in a number of critical ways. Perhaps the most common use case involves an officer making contact with an individual who lacks proper identification. Rather than bringing the individual into the station to fingerprint—a process that can take the officer off the street for several hours—the Mobile ID system allows prints to be collected on the spot.

The prints are then relayed from the fingerprint-scanning device to the officer's Android mobile device or an in-car mobile data terminal, and passed on to both the state criminal database and the FBI RISC database to search for a match. Thanks to the combination of faster technology and targeted databases, officers can count on a response in less than two minutes, at which point they can reliably ascertain if the individual has an active warrant.

Mobile ID systems are also becoming popular in identifying bodies in death investigations. Previously, unidentified bodies were fingerprinted at the morgue—with law enforcement officials often waiting up to 48 hours to get match results and begin their death investigation in full. Mobile ID systems allow unidentified bodies to be fingerprinted and run against existing databases right at the scene, enabling the investigation to begin immediately. In suspicious deaths, this "head-start" on the investigation can be a tremendous advantage.

Among the many other use cases, law enforcement officials are using Mobile ID systems to ensure that warrants are served to the correct individuals. The importance of this is largely self-evident, but law enforcement agencies note that this also protects them from legal liabilities and litigation stemming from wrongful arrest.

Key Benefits of Mobile ID

Between 2000 and 2009, 584 officers were killed by known offenders, according to the DOJ's 2009 LEOKA. Mobile ID systems promote officer safety. They enable officers to identify dangerous individuals immediately in the field and to take proper safety precautions in their interactions with these individuals.

As previously mentioned, in the event of contact with an individual lacking proper identification, Mobile ID systems improve productivity by enabling officers to quickly collect fingerprints and check the prints against state and federal databases. And all of this can be done from the field, with match results returned in less than two minutes.

This maximized officer productivity ensures that officers can remain on the street, protecting their communities. The simplicity of identifying individuals without proper identification means that officers are much more likely to obtain and search prints for these individuals. This significantly decreases the likelihood that wanted and/or dangerous individuals will be unknowingly let go.

Key Considerations for Agencies

As more and more law enforcement agencies look to deploy Mobile ID systems, there are two key considerations to ensure maximal benefit: fingerprint capture quality and ease of use.

The fingerprint scanners on Mobile ID devices vary greatly in terms of the print area scanned and the quality of the image captured. Reduced fingerprint capture area and the resulting loss of minutia reference points can lead to poor matching and false returns. In practice, this means that a wanted and/or dangerous individual could fail to be identified by poor prints, putting the officer and the public at risk. The scan area is defined as the device's Fingerprint Acquisition Profile (FAP). Not surprisingly, better sensors with higher FAP levels produce more accurate search results. In fact, a 2014 study by the National Institute of Standards and Technology (NIST) showed that a FAP10 sensor failed to identify its target approximately twice as often as a FAP20 or FAP30 sensor. For this reason, industry experts favor FAP30, or the capture of multiple fingers with FAP10, for more reliable accuracy.

Mobile ID systems are designed for in-the-field use, but the simplicity of operation can vary greatly. Devices that allow singlehanded operation enable an officer to retain a free hand; simple-to-use user interfaces mean faster print collection. These ease-of-use characteristics clearly enhance officer productivity, but they also play a critical role in ensuring officer safety. Instead of being physically and mentally tied up by a complicated device, a simple interface allowing singlehanded operation allows an officer to retain both a free hand and maintain situational awareness.

Functionality Continues to Evolve

Mobile ID technology is on its way to becoming the standard for in-the-field law enforcement officials, but the technology driving these devices continues to evolve. New all-in-one devices with 3G/4G LTE "smart" connectivity remove tethering dependencies to patrol cars, thereby maximizing device use flexibility. Developments such as this promise to lead not only to better functionality across existing use cases, but to create new applications for the technology—and to further support the safety of officers and the communities they serve.

Frank Fernandez is the market manager for law enforcement products at Crossmatch.

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