GlossaryEN1 min readUpdated: Jun 25, 2026

Jammer Devices for Cargo Theft Prevention

A driver en route notices his telematics unit has lost GPS signal – a telling sign that a jammer is active nearby.

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Last updated: 25 June 2026Published: 19 June 2025

Source: https://en.wikipedia.org/wiki/GPS_jamming

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Definition & Explanation

A driver en route notices his telematics unit has lost GPS signal – a telling sign that a jammer is active nearby. Jammer devices deliberately block GPS, cellular, and telematics signals to prevent fleet operators and recipients from tracking a vehicle or shipment in real time. Criminals deploy them to execute cargo thefts without triggering alerts or location updates. In most jurisdictions, jammers are illegal precisely because they indiscriminately disrupt legitimate communications, including emergency systems and digital tachographs, not just fleet telematics. The freight industry treats them strictly as a criminal tool, and carriers increasingly invest in anti-jamming countermeasures to maintain visibility over high-risk routes.

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Jammer Devices for Cargo Theft Prevention

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Approved Cargo Security Programs

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