I've never used QR codes before. What size would you make them for including in a layout? And will they work if you place them at a jaunty angle?
I've used them as small as 3/4" and they work just fine in my Shutterfly books. Also you should be fine to use them at an angle because you can just rotate your phone when you're scanning. Have you seen this thread with a tutorial on how to make a QR code? https://the-lilypad.com/forum/threads/june-20-technique-qr-code.48857/
You can make them jaunty. They don’t have to be straight. I have a layout in my gallery that has a QR code on it (it’s the one from Courtney’s recent song lyric challenge). I’d post the link, but I’m using my phone, and I can never copy it correctly.
Don't worry, Angela: you can place your code at whatever angle seems jauntiest without worrying about matching that angle with your phone's camera because QR codes have 360-degree reading capability due to "position direction patterns" that correctly orient the code once you've scanned it. The patterns are those 3 outlined black squares on every code.
I've even had the code a bit obscured and it still worked. I didn't want the silly thing to be the focus on the page so I placed it behind an element a bit. Now that I'm using them I don't know why I haven't done it before!