How to print non-printable ASCII control characters in the text generated by the app?

[MaganaJe]

Hi there!
Great app! I love it, just one question.

when scanning the QR code I attached I only see these characters in the app:

[)>06P401902521T01T252343726

But it seems that the app is not printing non-printable ASCII control characters, an app that does print them shows the following

[)>␞06␝P40190252␝1T01T252343726␞␄

I tried changing settings to show it like the last number but I was not able to do it :(
Does anyone knows how to print the non printable ASCII control characters?

Thanks! :)