I attach QR codes to all my invoices and I encourage every business entity I interact with to start doing the same. I had a few successes actually, though the b

I attach QR codes to all my invoices and I encourage every business entity I interact with to start doing the same. I had a few successes actually, though the big businesses are more reluctant. An old investor once told me: "Make it really easy for your customers to pay you, and you won't regret it." QR codes make it really easy to do a wire transfer and they prevent random errors from being introduced.