QR codes in the unboxing experience

One card, one action

The customer opening your parcel will give an insert card a few seconds. In those seconds, a card carrying five codes (review us, follow us, register, refer a friend, join the newsletter) communicates only that you want many things, and the reliable result of five competing calls to action is zero. Decision fatigue is not a metaphor here; it is why crowded insert cards fail.

So the design rule is strict: one card, one call to action, one code. If two actions genuinely matter, print two cards and let one lead, or move the operational actions (returns, support) to the packing-slip code, which is where order-related tasks belong anyway, and let the insert carry the single relationship action.

Choosing the action is a business decision with a rough hierarchy:

Business situation	The one action
New shop building proof	Review request
Product with recall/warranty exposure	Registration
Repeat-purchase product	Reorder or subscription
Growth via existing customers	Referral
Content-led brand	One social channel, not a link hub of six

The thank-you card pattern

The insert that consistently performs is barely marketing at all: a card that says thank you, sounds like a person, and offers one useful thing. "Thanks for supporting a three-person workshop: scan for the care guide that makes this last ten years" earns the scan because the customer gets something. "Follow us on social media" offers them nothing. Gratitude first, utility second, ask third, and if the card is signed or handwritten-styled, scan behaviour follows the perceived effort. Small-maker specifics are on the Etsy sellers page.

Label every code with its payoff, not its mechanism: "Scan for your care guide", never "Scan the QR code".

Print specs for a small card

• Size: 2 × 2 cm minimum: the card is read in the hand at 20–30 cm. Leave the full 4-module quiet zone; tight crops are the most common insert-card defect.
• Finish: matt or soft-touch laminate. Gloss cards glare under the ceiling light the customer is standing beneath; the same physics as glossy surfaces generally.
• Contrast: dark modules on the light area of the card. Codes reversed out of a brand colour or dropped onto a photo background fail exactly as described in colour rules.
• Verify before the print run, a thousand cards with a dead link is a classic; test the final artwork and re-scan a physical proof.

Point the URL at a stable path you control, and if you want attribution, add UTM parameters per card version so you can compare designs across print runs.

The marketplace caveat

If the order was fulfilled through a marketplace, insert rules are not yours to set. Amazon in particular restricts what inserts may ask for (review solicitation is the famous line), and the details are on the Amazon sellers page. Design your marketplace insert to that policy, not to your direct-channel playbook, because the penalty risk sits on your seller account.

FAQ

How many QR codes should a packaging insert have?

One. An insert gets a few seconds of attention, and multiple competing calls to action reliably produce none. If two actions matter, use two cards with a clear lead, or move operational links to the packing slip.

What makes customers actually scan an insert card?

A stated payoff. Cards that thank the customer and offer something useful (a care guide, a warranty, a first-order perk) get scanned; cards that ask for follows without offering anything do not. Label the code with the payoff.

What size and finish should the card's QR code be?

At least 2 × 2 cm with a full quiet zone, dark modules on a light ground, on a matt or soft-touch finish. Gloss laminate glares under indoor lighting and is the most common physical cause of failed insert scans.

Can I put a review QR code in an Amazon order?

Amazon's policies restrict review solicitation in inserts. Manuals, registration and support links are the safe territory. Check the current policy for your marketplace before printing, because enforcement lands on your seller account.