QR codes on packaging and print: what changes when you cannot reprint

Packaging outlives campaigns. A carton printed this quarter may still be on a dealer’s shelf in two years, long after the offer it advertised has ended and the page it pointed at has been redesigned. That is the whole problem with QR codes on print: not whether they scan, but whether they still lead anywhere sensible when they do.

Which makes the static-versus-dynamic decision more consequential here than anywhere else.

Why is packaging different from a flyer?

Three things: it lasts, you print a lot of it, and you cannot recall it.

A flyer has a life of days. If its code breaks, the cost is one campaign. A carton has a life measured in years, sits in warehouses and dealer godowns, and reaching every unit to correct a mistake is impossible. The code you print is the code that exists until stock runs out.

So a static code — with the destination baked into the pattern — is a commitment that the destination will never change. Over a two-year print life, it usually does. We have set out the mechanics in static vs dynamic QR codes.

What should a code on packaging actually lead to?

Something with a long shelf life, and ideally something that changes as the customer’s situation changes.

Destination	Suits	Why it holds up
Installation guidance	Adhesives, sanitaryware, pipes, doors	Useful at the moment the box is opened
Product specification	Anything technical	Answers the question a contractor has on site
Quantity or coverage calculator	Tiles, adhesives, dry mix	Reaches the buyer while they are deciding how much
Spares and parts lookup	Sanitaryware, fittings	Still relevant years later
Warranty registration	Anything with a warranty	Captures an end customer you otherwise never see
Dealer locator	Any channel product	Sends demand to the channel rather than around it
A time-limited offer	Nothing on packaging	Expires long before the stock does

The last row is the mistake worth avoiding. A promotional offer belongs on a flyer, not on a carton — unless the code is dynamic, in which case you can run the offer for a quarter and repoint it to installation guidance afterwards. That flexibility is most of the argument for dynamic codes in this context.

What does this give a manufacturer that dispatch data cannot?

Sight of what happens after the product leaves you.

You know what you dispatched. You do not know where it was installed, when, or by whom — because the dealer sold it and the contractor fitted it. A scan on the packaging is the first signal you have ever had from the far end of that chain.

Approximate location tells you where product is actually being consumed rather than where it was shipped. Timing tells you the lag between dispatch and installation, which is a rough read on how much stock is sitting in the channel. And a warranty registration gives you an end customer you can contact directly — rare in a business that sells through dealers.

None of it is complete. It is a sample, not a census. It is also more than nothing, which is what you have now.

One code per product, or per batch?

Depends on what you want to learn, and the cost is in the printing rather than the codes.

One per product line is simplest and answers the basic questions — is this being scanned, where, how often.

One per size or variant tells you which of your range gets attention on a shelf, which is genuinely useful for a deep catalogue.

One per batch is the most informative and the most demanding, because it means variable printing. For tile it would let you see roughly when a batch reached installation. Worth it only if you have a reason.

Start with one per product line. Adding granularity later is a printing decision, not a system one.

What goes wrong in printing?

Printed too small. The commonest fault. A code that scans on screen may not scan at the size it ends up on a carton.

Poor contrast. A code in a brand colour on a dark background may not read reliably. Dark on light is what cameras expect.

No quiet zone. A code needs clear space around it. Placed tight against artwork or a fold, it fails.

On a curve or a seam. Bags, tubes and cylindrical packs distort the pattern. Test on the actual pack shape.

No label. A bare square gets ignored. A line saying what it leads to gets scanned.

Test a physically printed sample with several real phones, in warehouse lighting rather than an office, before committing to a run. This is a cheap check that prevents an expensive one.

Common questions

Is it worth it if most customers never scan?

Scan rates on packaging are modest, and that is fine — the marginal print cost is near zero and the people who do scan are usually installers or buyers with a live question. Judge it on who scans rather than how many.

Can we change the destination after printing?

With a dynamic code, yes, at any time. With a static code, no — which is why static codes on long-life packaging are a decision most businesses regret.

Should the code go on the box or the product?

Depends who you want to reach. On the box reaches whoever opens it, usually the installer. On the product reaches whoever owns it later, which matters for spares and warranty. For sanitaryware and fittings, both is reasonable.

Will dealers object to a code that could bypass them?

They will if it leads to a direct purchase. Point it at guidance, specifications or a dealer locator and it supports the channel instead of competing with it — which is also the version that gets scanned, because it is the one that helps.

More on this: static vs dynamic QR codes and tracking secondary sales. See also building materials.