Business use

[Dan Russell]

I know QR codes are free for personal use, but I was wondering if I
would I be able to use one of your QR Codes on business letters and
such? (linking to the business website)

[Sean Owen]

QR codes are free, full stop. If you're referring to the ultimate rights holder for the technology, DensoWave -- they've long since stated that QR code can be used freely. And the output of our project / encoder is not even theoretically owned by anyone but you, so that image can be used as you like. Nobody should be paying anything for QR codes, but, I know plenty of companies that are happy to receive a fee for encoding...