Hi, I'm a Delphi programmer for more than 20 years, and I've worked from version 3 to Delphi 10 Seattle. I have worked with printing tasks, mainly through the windows drivers. In your case, talk about bluetooth, before accepting I would like to know if what you want is to print directly on the printer: what printer is it? Do you work with POS / ESC commands? Is it another type of command ?. It is possible that it can be done by converting the QR code into an image and sending the image. Is there anything more to print than the QR code? Thank you