The ticket is actually offered by multiple transport companies and organisations which have different forms of payment, but the coverage is the same. Some of them accept VISA also, for example the MVV (Münchner Verkehrs- und Tarifverbund).
I'm using GSConnect on Ubuntu. I have first disabled "Clipboard Sync" to avoid it transferring every clipboard content. Secondly, there are a number of actions for which keyboard shortcuts can be defined for a device [1]. One of them is Clipboard Push. I assigned Shift+Ctrl+Alt+V to that, so whenever I execute that contrived key combination, the clipboard is synced to my mobile. I suppose the Plasma implementation has a similar feature.