Should packaging carry a tag, a QR code, or both?
The code is nearly free because the packaging is being printed anyway, and the tag costs cents on every unit produced. At packaging volumes that difference decides most of the argument, so a tag needs a reason a printed code cannot serve.
The economics are different here
On most surfaces, adding a printed code means printing something. On packaging, the printing is already happening, so the code is a design element rather than a cost.
A chip is a physical component applied to every unit. At a few thousand units that is noticeable, and at a million it is a line in the product cost.
That asymmetry does not exist on a business card or a shelf edge, which is why arguments imported from those contexts mislead here.
So the question is not which is better in general. It is what a tag does that justifies a per unit cost the code does not carry.
What the tag buys
No line of sight, so the chip can be inside the box, under a label, or behind a sleeve, and the pack stays clean.
A gesture that works with the product in hand, in poor light, without framing a camera one handed while holding something.
Survival, since a chip under a surface keeps working when print is scuffed, wet or covered by a price label.
And a per unit identity, where a chip that mirrors its own identifier gives every pack a different address from one identical write.
Why both is common
The code is visible and the tag is not. A pack with only a chip gives the customer no sign that anything is there, which is the single biggest reason packaging tags go unused.
The code also serves everyone whose phone will not tap, which is a real minority you cannot identify in advance.
So the practical arrangement is a printed code and a printed instruction, with the chip serving the people for whom a tap is easier.
The printed element then does the announcing, which is the job the chip cannot do.
Deciding for a run
Cost the chip against the whole run rather than per pack, and put it beside what it is expected to achieve.
Ask whether anything about your pack defeats a camera: a curved bottle, a reflective film, a pack handled in a dark cupboard.
Ask whether per unit identity matters, since that is the capability with no printed equivalent at this price.
And run a small quantity with both before committing, because which one people actually use is a question your customers answer rather than your team.
Frequently asked questions
Is a QR code cheaper on packaging?
Substantially, because the packaging is printed anyway. A chip is a component added to every unit produced.
Can the chip be hidden inside the pack?
Yes, since it needs no line of sight. That is one of its genuine advantages and it costs you the visibility a printed code has.
Do I need both?
Usually. The printed element announces that something is there, which the chip cannot do, and serves people whose phone will not tap.
What justifies the per unit cost?
No line of sight, survival of a scuffed pack, a one handed gesture, or a different identity on every unit. Novelty does not.