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In retail stores, do barcodes trigger the alarm gates?

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In retail stores, do barcodes trigger the alarm gates?

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  1. No. There is a little foil coil inside the package that disrupts the frequency of an alarm oscillator. When the oscillator is detuned by that coil being near it, that triggers the alarm.

    The reason they put it inside packages is to keep people from finding it and disabling the alarm capability.


  2. no.....but why do you ask?
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