Architects' Tech Alliance
Jun 7, 2018 · Fundamentals
How High‑School Exam Signal Jamming Works and the Countermeasures
The article explains why mobile phone signals are disrupted near Chinese high‑school exam sites, describing the use of high‑power jammers that flood the spectrum with noise, how this affects users, and the technical countermeasures such as drones and radio monitoring to prevent cheating.
cheating detectionelectromagnetic interferenceexam security
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