Yes. We can print QR codes onto any custom sticker as long as the QR + artwork is at least 300 ppi or better. Just be sure to embed the code into your artwork.
In order to be easily scannable, you need a white border around your QR code and we recommend making the code at least 2" in size to ensure scannability.
There are some instances when we can print the QR code smaller than 2". For example, if the QR code is a very simple design, we can print smaller than the suggested 2", to our minimum size of 1".
Below are examples of QR code designs ranging from simple to complex. Version 2 we could print at 1", while version 6 and 10, we would recommend a size of 2" or larger to ensure scannability.