Blog / Guide

WhatsApp QR code for your shop: from the counter to the chat

“Message us on WhatsApp” said out loud at the counter is forgotten before the customer leaves the shop. Printed as a QR code, it becomes an action: the customer points their camera, the chat opens with a message ready to send, and from that moment you have a direct channel with a person who has already walked in. It’s the cheapest bridge between the physical store and conversational marketing — let’s see how to build it well.

What it is (and how to create it in two minutes)

A WhatsApp QR code is a code that, scanned with the camera, opens a chat with your number directly — without saving the contact. There are two ways to create it. The first: from the WhatsApp Business app, in the business tools, you generate the official QR for your number, with the option to set a pre-filled message. The second: you build a wa.me link with the number in international format and a predefined text, and turn it into a QR with any generator.

The pre-filled text is the underrated part: it’s the message the customer will find already written, ready to send with a tap. It lowers the barrier — it solves the “what do I write?” — and, as we’ll see, it’s also your measurement tool.

Where to place it: the spots that work

• Storefront: it works even when the shop is closed — someone passing by in the evening can message you and get an answer in the morning, or right away if an AI replies. Pair it with a promise: “Ask us about availability and prices.”
• Counter and checkout: the moment when the customer has time. The classic hook: “Want to know when new arrivals come in? Scan and message us.”
• Receipt: turns every purchase into a potential contact. Space is tight: a QR plus one line, “Support and offers on WhatsApp.”
• Packaging and bags: the QR travels all the way to the customer’s home — perfect for after-sales support, instructions, reorders.
• Flyers, business cards, menus: anywhere there’s paper the customer holds in hand.
• Trade shows and markets: the stand is crowded, the QR collects the contacts you can’t follow up with on the spot.

What to write: pre-filled text and first message

The pre-filled text should be natural to send and specific to the spot: “Hi! I saw the QR in the window, I’d like some information” for the storefront, “Hi! I’m writing from the receipt: I’d like to get your offers” for the checkout. The customer taps send, and you already know where they came from.

Then it’s your turn: the first reply decides whether the chat lives or dies. The rules are those of a good greeting message — introduce yourself, answer the request or say when you will, close with a question. A complete example: “Hi! Thanks for messaging us 😊 We’re [shop name]: tell me what you’re looking for and I’ll reply within a few minutes during opening hours. Would you also like to receive offers and news first?”

That “would you like to receive offers and news?” is the step that turns a scan into a marketing contact: a yes is your consent — record it — and from there the customer enters the list for campaigns. Without that question, the QR collects chats that fizzle out the same day.

How to measure a QR code (without complicated tools)

WhatsApp doesn’t tell you how many times a QR has been scanned. Measurement is built upstream, with three techniques that require nothing technical:

• A different pre-filled text per spot: “I saw you in the window” versus “I’m writing from the receipt” — by counting messages you know which spot performs best.
• An origin tag in the CRM: as soon as the first chat arrives, tag the contact (storefront, receipt, packaging); at month’s end the numbers are there.
• A dedicated offer: a small perk reserved for those who write from the QR — “show this message at checkout” — making each redemption a tracked data point.

The metrics that matter, in order: chats started, consents collected, purchases generated by the conversations. A QR that brings ten chats a month and six consents is worth more than one that brings thirty destined to fizzle out at once.

And when lots of people write? The role of AI

The QR works at the worst moments to reply: Saturday afternoon with the shop full, the evening with the shutters down. If the reply comes the next day, interest has cooled. With SendApp you connect your number via QR code in five minutes — that’s a different QR: it connects your WhatsApp to the platform, not to customers — and the AI agent replies instantly to every scan: it gives hours and availability, collects consent, books, and hands the chat over to you when a human touch is needed. The contacts land in the CRM already tagged by origin, ready for the first campaign.

Best practices for printing and placement

• Size proportional to the distance: the farther the scanning point, the bigger the code must be — in the window much larger than on the receipt. And test it from that distance, with your phone, before printing.
• High contrast and no patterns: dark QR on a light background; logos and colors inside the code reduce readability.
• A call to action beside it, always: the QR alone says nothing — “Scan and message us on WhatsApp” with the icon is the minimum.
• Give a reason, not a command: “ask us about availability,” “get offers first,” “skip the line” — people scan for a benefit, not out of courtesy.
• Update it if you change numbers: a printed QR lasts for years; if the number changes, it must be redone and reprinted in every spot.
• Recheck it now and then with different phones: lamination, reflections, and direct sun can make it unreadable precisely in the window.