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How can i use an outer source of text input( ex. Scanner) to input data without having an HTML input field?

I have attached my usb scanner to the pc. it works well with a normal input field. But i dont want to show the field box. I only want to read the Data through scanning.

I tried hidding the input field by using input type="hidden" . that hides the field but data doesnt pass. I tried display:none; same as before. And Finally i tried vanishing the field's border/outline But it was useless.

Just Figured out that setting the z-index: -1 does the trick. If there's a better option let me know

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