How to replace a QR code you already printed
When a printed code stops working, you rarely need to reprint everything. Here are the fixes, from cheapest to most thorough.
1. Stickers over the old code
Print the new code on opaque labels a little larger than the old code, and stick them on top. Opaque or "cover-up" labels matter: a thin label can let the old pattern show through and confuse scanners.
- Measure the old code and add at least 3 mm (1/8 in) on each side for the white border.
- Use the SVG download for sharp printing at any size.
- Scan a test sticker on the real item before you label hundreds.
2. Reprint only what customers see most
Table tents, window signs and the front of a menu do most of the work. Replace those first and cover the rest with stickers.
3. Make the next code impossible to hold hostage
- Use a static code pointing to a page on your own domain. You control that page forever.
- Or use a dynamic code that is paid once, so there is no renewal to miss.
- Whatever you choose, scan the code and read the address it shows. If it is someone else's domain, ask what happens when you stop paying.
Packaging and large print runs
If codes are on packaging already in stores, a sticker fix may not be possible. In that case it is often cheaper to keep paying the old provider until the stock sells through, and print the new code on the next run.