Tap to scan feature request

The scan process starts automatically when the plugin gets activated. We have implemented your plugin into a stock maintenance app for testing. We have printouts each with about 10 barcodes on it and when we hold a phone above the sheet, the plugin immediately recognizes a barcode, but not always the correct one.

A button or tap event for starting scanning would be a great improvement, so that initially it's only a preview.

Thanks in advance !