I have a scanner that reads qr codes for delivery packages, the problem is that I can’t do the for each, it reads ten, twenty times the same qr code, what I need is that it reads only once, each try to scan again it returns the message already scanned. I created a block but it didn’t work very well …

How to prevent scanner reader from reading the same qr code twice

themaayur (Mayur Berad) August 19, 2020, 3:21pm 13

The extension is here

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