Thank you to Manuel Lausmann for submitting his YouTube video showing how he has set up a system that allows him to rapidly change frequencies in SDR# with a barcode scanner and some barcodes printed via an online generated. This might be an interesting way for non-technical users to easily change frequencies on demand, for example in a public demonstration of various radio channels.
We note that the video is narrated in German, but you can use the YouTube auto-translation feature to get English subtitles.
Schneller Frequenzwechsel mit einem Barcode Scanner