There's a trend all over supermarket shelves: "Scan the code under the cap to enter the draw!" or "Scan the QR code for a discount!"
These gamified campaigns are a great way to boost sales. But operationally there's a critical question: "How do we print a different code on each of thousands, even millions, of labels?"
That's where Otiket's variable QR roll label service comes in. Here's how this process differs from standard printing and how we keep your campaign secure.
What Is a Unique Code, and Why Does It Matter?
In standard printing, one design is printed thousands of times. Giveaway labels are different: they share the same design, but the QR code and alphanumeric code (e.g. A7X-29B) on each one are completely different.
This is called variable data printing. It means:
- Each code can be used only once (security).
- You can see which products sold where (data).
- You stop fraud.
How It Works: From Excel to Label
1. Prepare the Database
Your software team or agency prepares the campaign codes in an Excel (.xls/.csv) file, for example a list with a different code on every row.
2. Design and Matching
You send us the color design (your logo, "Enter the draw" and so on). We load it into our print software and integrate your Excel file.
3. Hybrid Printing and Checks
We print the colored background first. Then our industrial printers add each row of your file to the labels in sharp, durable black. Each label carries the next code in the list, with no repeats.
Security: Hiding the Code
You don't want codes scanned by others while the product sits on the shelf. Options include:
- Scratch-off layer: a scratch-off panel over the code (special process, on request).
- Inside the pack: labels made of durable opaque PP that go inside the packaging.
- Hidden placement: sizes made for under-cap or back-of-bottle areas that can't be read until the product is opened.
Which Material?
| Use | Recommended material | Why? |
|---|---|---|
| On boxes/cartons | Coated paper | Low cost, fine in dry conditions. |
| Drinks/cold chain | Opaque PP (plastic) | Unaffected by moisture; codes stay readable. |
| Security seal | Security labels | Show tampering when removed. |
Conclusion: A Professional Solution for Flawless Campaigns
The smallest mistake on a campaign label (an unreadable QR code or a duplicate) can seriously damage your brand. That's why this work belongs with a printer experienced in data handling.
Is your code list ready, or wondering how to run the process? Contact us and we'll prepare samples and a quote for your project.
