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How did the teacher not notice the headphones and question you about it during the exams?
by scottshapiro 8y ago
How did the teacher not notice the headphones and question you about it during the exams?
- ttoinou 8y agoPersonally for theses kind of things I used to use one earphone in my left hand, wearing a long sleeve shirt and laying my head over my left hand, covering the whole operation :)
- yholio 8y agoThe headphone was a very small analogue receiver that had it's own micro-battery, an inductor and amplifier - all about 4mm wide and 8mm long. You would place it deep inside the ear channel and it was invisible even to a person standing right next to you. The signal was induced by a coil you would wear around you neck and you would pipe raw audio into it. Similar systems are even now on sale: https://www.olx.ro/oferta/sistem-de-copiat-casca-invizibila-ceas-samsung-gear-foto-si-afisaj-IDbDVgN.html#250d9e18f4 https://www.olx.ro/oferta/sistem-de-copiat-casca-invizibila-...