Prisoners are fitted with a rugged, tamper-resistant, waterproof, wristband. The wristband features; human readable and bar coded text, a photograph of the prisoner and has a passive ultra-high frequency (UHF) RFID chip. A unique prisoner identification code is embedded in the wristband’s radio frequency (RFID) chip. Prisoner data is configured and administered within Lockwood’s proprietary tracking software – with the prisoner identification being the unique record key.
Stationary RFID power-over-Ethernet (POE) enabled readers with antennae are attached to a LAN, and strategically positioned throughout the prison to reflect defined read points. Read points will equate to either a specific location, or represent a zone (multiple read points combined).
As prisoners pass any read point, their wristband is read and the information is passed through the network to the tracking system for processing.
Prisoner records store custom-designed data unique to each prison system. Prisoner schedules can be embedded within each prisoner’s record. As movement is detected, prisoner records are updated to reflect movement and to keep up-to-date indication of the prisoner’s current location at any given point in time.
Prisoners can be categorized in order to establish groupings of restrictions, such as gang affiliations or other meaningful criteria that may be useful in monitoring and controlling movement.
Stationary Read Events
Information is continually monitored using the Lockwood’s sense and respond software. Predefined incident triggers are established in order to react to evolving conditions as movement ensues. Examples include:
1) Conducting daily scans of each prisoner’s wristband as they pass a stationary checkpoint – the system cross-references the wristband reads to expected headcount and reconciles accordingly
2) Prisoner records can contain authorized and unauthorized locations and zones. As the prisoners pass read points, the system will cross-check and send alerts when a prisoner is detected in an unauthorized location or zone
3) Dependent upon the positioning of read points, the system can establish length of time required to move between adjacent read points. As a prisoner passes read point A, the system can calculate and react to delays in passing the next read point in succession, and so on…
4) Because a prisoner’s daily schedule can be established in the prisoner record, the system can compare where a prisoner should be at any given time to read point detections of their respective wristbands, and either confirm all is well or react and send an alert when a schedule is not be fulfilled as expected.
5) Using combination of wristband detections, the system can ascertain the presence of groups of prisoners within close proximity of one another and react to predefined restrictions which disallow this situation
Event notifications and alerts can be monitored in several fashions: use the system EventViewer on a dedicated monitor or set of monitors, have alerts automatically sent to specific individuals via email or text messaging and to program the system to pass event notifications through to a 3rd party security monitoring system.
Mobile Read Events
In addition to stationary read points, prison officials are able to carry handheld PDA’s with built in bar code and RFID scanning ability as well as global positioning (GPS) capability. Using the mobile device the official would be able to stop a prisoner, scan their wristband and conduct informational lookups on the spot. The mobile screen can be customized, on demand, to meet unique lookup requirements for each prison system. Typical lookup forms could contain a prisoner’s name, identification number, picture, any special restrictions, their schedule, expected destination, housing unit, cell number and so on.
Using the mobile PDA is also used to enhance nightly cell checks, confirming each prisoner is in the appropriate call and bed.
The mobile device may have the ability to; capture fingerprints, take digital images, scan bar codes, detect RFID tags, capture GPS coordinates and record hand-entered information, via a touch screen and/or keypad.