If you use (or want to use) QR codes in your marketing efforts there are many services that help you do that. But what if those services go out of business or decide to charge money to use them? What if they decide to redirect all your links to their own websites or they’re hacked?
This is why you should own and control your links and QR codes. It’s easy, it’s free, and here’s a quick video tutorial for WordPress website owners. You can set your back matter, business cards, and print marketing with codes you own, and if you ever need to change the link you can do it in seconds without changing the QR code image or having to re-create it.