Luckily, I did find a really good work around.
Vistaprint, where I get all my bookmarks, cards, pull-up banners and bits and pieces from now offers a QR code generator. I suspect that the codes only stay active and saved if you have used them to print on something, so I made them and then printed a small run of them which I can use to stick onto things that I've already printed. In the case of the Very Secret Sex Lives of medieval Women book, I can just stick them in the back of the book for any stock that's going to the museum bookshop or to book signings, so that's fine.
The new Single Medieval Women book will have them printed in the back for both the sources and the bonus image gallery, but for book signings where there are other little things, I can pop them on the back of cards or bookmarks where appropriate. People who get a free bookmark might pop into the image gallery and decide they'd like to buy a book to see more information.
It's all a tax deduction anyway, so it's not costing me too much compared to other things in life.











