Add payment characters string in addition to the QR

[jpl-btc]

It would be nice to have the payment string and be able to copy it to the clipboard by simply clicking on it with a finger or with a mouse click, for mobile or desktop purposes, just below the qr code.

[bumi]

I don't think this is the intended use. The PoS you will never pay yourself from another wallet. why do you need this?

[jpl-btc]

I want to use the pos to share the expenses of some empanadas we will eat in a friend's gathering and send the invoice through whatsapp.

I can take a look at this on my free time and see if I come up with a solution... to my own problem, only if you think it is ok to implement this.