National Public Safety Information Bureau

Press Releases

Yorkie Contraband Cell Phone Detector Attracts Larger Audience

Covert cellular receiver gains new use cases across multiple industries

Metuchen - New Jersey, November 09, 2020

Berkeley Varitronics Systems, Inc. (BVS), a leading provider of advanced wireless security, test, safety and cybersecurity solutions and products sees continued growth in Yorkie™ contraband phone detection sales across multiple industries.

Yorkie™ is a handheld receiver designed for covert wireless cellular 3G/4G/5G (non-mm wave frequencies) contraband detection. The unit’s algorithm ensures that only the strongest cell phone (voice, text and data) activity is displayed at all times with no false triggers from Wi-Fi, bluetooth or other RF interference. Users can adjust threshold levels instantly and set attenuation for noisy RF floors for any facility. Yorkie includes vibrating and audible alerts but those can be toggled off for more covert RF sweeps in prisons, government facilities and military bases.

Yorkie cell phone detector was released in 2018 but continues to find new security use cases across multiple industries and professions. The unit detects cellular use up to 150 feet away using the included omni directional antenna but the newly supported wideband (DF) direction finding antenna can pinpoint cellular activity up to 1/2 mile away outdoors (line of sight). This makes Yorkie especially useful for ICE and border patrol agents, search and rescue operations and correctional facilities tasked with keeping large outdoor areas free of wireless contraband.

Government, military, law enforcement, private investigators and TSCM (Technical Surveillance Counter Measures) experts are also finding Yorkie useful for detection of GPS trackers hidden within or under fleet and personal vehicles. The proliferation of low cost GPS tracking devices has enabled criminal enterprises and even jealous spouses and partners to track the whereabouts of virtually anyone without their knowledge. It is currently illegal in all 50 states to use a GPS tracker on a vehicle that you do not own without a warrant issued by a court, but it is completely legal for anyone to use a Yorkie to detect such a device. As a result, Yorkie has become increasingly popular among all kinds of users for its simple, handheld operation and high sensitivity.

Yorkie is available for $995 directly from Berkeley Varitronics Systems and also available on


Craig Schober