In 2006, with EPCGlobal's EPC Generation 2 standards in place and RFID tag costs going down, Zinn's team looked for an integrator to help them design a solution using passive RFID tags integrated with a real-time location system (RTLS) to track the thousands of felony case files the court system processes annually.
They selected InnerWireless, a Richardson, Texas-based company as the system integrator, and looked to integrate its PanGo Unified Asset Visibility Platform with the Circuit's electronic case filing system, called STAC. "With their successful implementations in hospitals, InnerWireless gave us a high level of comfort," said Zinn.
In addition to InnerWireless' PanGo software, Zinn's solution was comprised of a tag database with a ThingMagic® Mercury5 RFID interrogator (RFID reader), and 1-by-4-inch paper labels with embedded Alien Technology EPC Gen 2 RFID tags.
In parallel, Zinn's team was working with Simply RFiD, a Warrenton, Va.-based developer of supply chain logistics and asset management systems, to select a printer/encoder and implement a methodology for printing and distributing labels.
"At the time, we were moving along with InnerWireless's technology but did not have an effective tag solution until we found Simply RFiD," said Zinn. "Be¬cause of the company's expertise in tagging and labelling supplies shipped to the U.S. Department of Defense, Simply RFiD was able to immediately come up with a tagging solution and the software to produce the tags."
Simply RFiD provided the Zebra® R110Xi™ RFID printer/encoder, the tag printing application and consulting related to RFID programming and tag control. In addition, the company provided the Florida State Attorney's Office with a solution for creating staff ID cards with the Zebra P430i™ RFID badge printer.
Carl Brown, president of Simply RFiD, explained that it was in compliance with the DoD- 96 Identity Type and selected the numbering scheme for CASE-Level tags. The standard is ratified by EPC Global. "Using this format uniquely identifies the tags to our organisation," said Brown. "This approach also allows our numbers scheme to be transportable if there is need to integrate with other tracking systems. Using the DoD schema, if you receive spurious RFID data, you can tell it's not yours because the encoded numbers would not be in your pre-designated DoD format."
Zinn explains, "Initially, we planned on having our Intake division batch print the labels, which was the current method of label printing. But tag programming and printing a barcode on the tag from a central location proved to be successful, which reduced costs and provided a method of tag control. The division supervisor controls tag distribution."
"We chose the Zebra R110Xi because it provided a robust solution offering investment protection, ef¬ficiency and productivity. It also offered flexibility in tag placement and label size, as well as seamless integration into our network," said Zinn.
barcode readers from MetroLogic , now a part of Honeywell, read the barcodes from the RFID tags placed on the files. Then, the barcode number is input into STAC—the State Attorney's Office's file—tracking software-and related to the case ID and case number. The data is transferred from the readers' Transmission Control Protocol (TCP)/Internet Protocol (IP) over a WLAN that is attached to InnerWireless' PanGo application server.
InnerWireless' PanGo Platform middleware aggregates the unique ID numbers the interrogators cull from the RFID tags, then calculates locations and passes that information to STAC.
Employees can access STAC and, in two keystrokes, determine a file's whereabouts on a graphically presented floor plan. The system can identify the floor and office containing the file, as well as how long it has been in that location. In addition, the system can present a list of cases located within a particular area, and staffers can click further to find more information on a specific file listed. According to Zinn, the system is extremely accurate.
Zinn explains that one of the more exciting aspects of the project was that it required literally no staff training. The only function staff needed to learn was directly from the STAC case screen. To select a file, they hit Control-I. "The implementation was seamless and transparent and required little or no system maintenance by IT staff."
In February 2007, the solution went live at the State Attorney's Office. "The project actually took about 60 days to design, install and implement. Much of the seven months was spent waiting on building approvals and scheduling electrical service for the 14 readers," said Zinn.
Because the implementation of standards-based technologies typically allows the flexibility of extending cost-effective RFID solutions to other aspects of the office, Zinn's team is now in the process of working with InnerWireless, Simply RFiD and Zebra to implement an employee ID tracking system. In time, the system will track up to 400 employees to determine which employee has taken a file in or out of the building.
Zinn continues, "By the end of 2008, we will have completed implementation of a motion-sensored video camera system at each exit. The time-stamped photos can be associated with the RFID reader locations to visually track who left with a specific case file. In addition, we expect to expand RFID tracking to mobile assets, such as laptops and AV equipment."
In addition, Zinn explains how the original project expanded into other business processes. "When we initially started the RFID project, we wanted to avoid bar coding," he notes. "But after learning about Zebra's array of solutions and capabilities we decided to buy Zebra's TLP 3844-Z™ to barcode the files in our misdemeanor division, which reviews about 100,000 misdemeanor cases a year. This requires manual entry of a 20-digit case number on 30 to 40 files daily. Now, the barcode can be quickly scanned and placed into our system but does not need to be tracked by RTLS."