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Currently we only have a QR Code Reader widget, it allows your form users to scan a QC code and output it on a text box shown by the widget. It can only handle one input at a time. That widget also uses Flash and I believe mobile devices cannot ran Flash on mobile web browsers. We do not have a barcode reader widget. But I will forward this to our back-end team as a feature request. Please note that we cannot guarantee that this will be implemented, it depends on our developers current workload and its feasibility. We will update you on this thread as soon as we hear any news.