Amazon Local Register

Re:Amazon Local Register by whitenoise on Wednesday August 13, 2014 @12:59PM (#8173872)

[1]"Make sure the microphone on your device is turned on".

I am not familiar with the card reader hardware. Why is a microphone needed for processing a credit card swipe?

[1] - http://localregister.amazon.com/help/201549190/swiping-a-car...

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Re:Amazon Local Register by burnte on Wednesday August 13, 2014 @02:28PM (#8174311)

The reader inputs the data from the magstripe as audio data. The data on the stripe can be interpreted as audio data, and it is, piped in via the microphone part of the TRRS connector on the reader, just like your headset.

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Re:Amazon Local Register by crazy1van on Wednesday August 13, 2014 @02:22PM (#8174274)

I believe it plugs into the audio jack. The device captures a swipe as audio data as if it were a microphone and the software interprets the audio as magnetic stripe data.

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