Not All Electronic Monitoring Is Created Equal


DSC_0531_OM400_FlatMost electronic monitoring systems fall victim to a set of common weaknesses that result in a high volume of false alerts. The most common of these weaknesses are lack of indoor location, two-piece GPS hardware, and inferior strap technology. Taken individually or in combination, these flaws produce so many false alerts that agencies find it difficult, if not impossible, to implement effective response protocols to critical incidents, like an offender absconding or tampering with a bracelet. Swift and appropriate response to violations is the crux of electronic monitoring. Without it, an electronic monitoring system is of little value to an offender’s progress, endangers public safety, and opens agencies up to liability and sensational negative publicity.

Here are three ways Numerex’s offender monitoring solution, the OM400, produces 10x fewer false alerts.

Patented Strap Design

OM400_leftStandard strap technology used by many electronic monitoring vendors generates a high volume of false tamper alerts. As a result, corrections and law enforcement teams use valuable resources responding to false alerts. Some vendors have created system-imposed grace periods to try to determine which alerts are real these grace periods make it so that offenders can quickly remove and reassemble their monitors without detection, and/or abscond for days without intervention.

With the OM400’s patented strap design, its open strap or closed strap, there’s nothing in between. In an independent test, one million pulls on the OM400’s strap assembly failed to produce a single false strap tamper alert.

Accurate Tracking Indoors and Outdoors

Many electronic monitoring systems aren’t able to track offenders indoors or outdoors in large metro areas where urban canyons exist. As a result, their bracelets send “no communication” nuisance alerts to the monitoring team.

Omnilink pioneered indoor tracking in 2004 by leveraging AFLT/CDMA cellular triangulation technology to pinpoint the locations of offenders indoors and in urban canyon areas. With years of additional research and refinement, the solution’s indoor tracking is even more accurate and precise. Because the OM400 bracelets don’t lose track of offenders, customers receive fewer “no communication” nuisance alerts with use on offender whether indoors or outdoors.

Single piece GPS Units

Two-piece GPS units require that an offender reliably manage two pieces of electronic monitoring technology. The additional equipment is bulky, more difficult to handle, and doubles the likelihood of failure due to offender error.

The OM400’s GPS units are one piece and eliminate the “cuff leave” nuisance alerts and extra burden for electronic monitoring teams.


Developing effective solutions to common system weaknesses, the Numerex electronic monitoring system delivers 10x fewer false alerts. Agencies respond swiftly and effectively to violations, and staffers can better manage caseloads that produce positive outcomes. The bottom line is fewer alerts makes electronic monitoring less costly and contributes to more efficiencies.

To learn more about offender monitoring and public safety solutions from Numerex, visit

Author: Marketing Admin

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