Neatorama Posts Tagged "wireless signal detector"
Anti-Cheating Devices: From the Ridiculous to the High-Tech...

Back in 2010, we showed you this ingenious DIY ant...  ...CCTVs and professional exam watchers, as well as wireless signal detector to prevent cheating by wireless headphones, two-way radios and other electronic d...

http://www.neatorama.com/2013/08/22/Anti-Cheating-Devices-From-the-Ridiculous-to-the-High-Tech/
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