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[SOLVED] A question about the android scanner

I am new here and fairly new to android. I'm a die-hard linux user. :)

My first impression of a barcode scanner on android was a special LED and you swipe across the barcodes. But I was wrong.

On youtube I saw people taking snapshots at QR codes and barcodes.

Does this means that all you need is a built-in camera and a barcode app? Or am I misinform?

I appreciate any feedback. Thanks
 
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