The QR code is the entire interaction surface of a modern loyalty programme. The customer’s first encounter is a printed code somewhere in your shop; the daily transactions all flow through the customer’s phone showing a code that staff scan. If the QR experience is bad — poster in the wrong place, code too small, glare on a glossy laminate — the programme fails before it begins.
This guide covers the practical detail of QR code design for a UK loyalty programme: where to print, what size, what to write next to it, common mistakes, accessibility, and exactly how the Pointify QR flow works in practice.
Where to place the poster
One rule: the QR should be where the customer is already looking, with their phone already in their hand. That means three locations in priority order.
The till. Highest priority by a wide margin. The customer is paying, their phone is out (contactless), they have ten idle seconds while you process the transaction. A4 or A5 poster directly beside the card terminal is the single highest-converting placement. This is non-negotiable.
Tables (for cafés, restaurants, salons with waiting areas). Small A5 or A6 table-talker. The customer is seated with phone out. Adds about 15–25% of sign-ups on top of the till poster.
The front door. A small window decal at eye level says “Loyalty rewards inside — scan to join”. Useful for capturing walk-by interest, lower conversion than till, but free advertising on the street.
What not to do: don’t hide the poster on a side wall, behind the counter facing away from customers, or above the till where customers can’t comfortably point their phone at it.
Sizing — A3, A4 or A5?
Honest answer depends on the placement.
- A3: wall-mounted, behind the till, visible from across the room. Useful for “announcement” placement at launch. Overkill for an established programme.
- A4: the standard till-side poster. Fits next to a card terminal without crowding. Code should occupy roughly 40–50% of the page, with explanatory text around it.
- A5: table-talkers and door decals. The QR code itself can be as small as 3×3cm and still scan reliably from 20–30cm.
- A6 or business-card size: handed to customers. Easy to lose. Use sparingly — the phone-app form factor is the loyalty card now.
Minimum code size for reliable scanning: 2×2cm if held close, 4×4cm for till-distance scanning, 8×8cm for window placement.
Contrast and finish
Contrast matters more than design. Black-on-white is bullet-proof. Any QR code on a coloured background needs to be tested under the actual lighting conditions of the shop — a code that scans perfectly under office fluorescents can fail under warm amber bulbs in a café corner.
Finish matters too. Matt laminate scans reliably; glossy laminate creates glare that defeats phone cameras in certain angles. Cheap inkjet print fades within a fortnight in window placements. For till and window posters use a professional print shop with matt laminate or an A4/A3 cold-lamination pouch. Total cost: £3–8 per poster from any UK high-street print shop.
What to write beside the code
The QR code itself communicates nothing. The text around it does all the work. Three lines:
- The promise. “Scan to earn points on every visit” or “Free coffee on us — scan to join.” The customer needs to know what they get in five seconds.
- The mechanism. “1. Scan. 2. Enter your email. 3. Show your code at the till.” Three steps maximum.
- The reassurance. “Free to join — no card, no spam.” Removes the two most common objections.
What not to put on the poster: lengthy terms and conditions, multiple QR codes (one for sign-up, one for app store, one for the website), tiny print, ironic copy that confuses older customers.
How the Pointify QR flow actually works
Pointify uses two QR flows. The poster QR is static and persistent — it’s the join link, generated when you set up your merchant account, printed and placed around the shop. This QR never changes.
The transaction QR is the customer’s. When they want to earn points at the till, they open the Pointify app and tap to generate a single-use QR code on their phone. The code is valid for 2 minutes. The staff member opens the merchant app and scans it. Points are credited at the standard 4 points per £1 rate with HALF_UP rounding. After 2 minutes the customer’s code expires and a new one must be generated — this is what makes the system fraud-proof.
For redemption, the same flow applies: the customer generates a code, staff scans, the redemption is processed within a 24-hour window. There’s no till-integration plugin; the merchant app runs on any modern phone or tablet.
Common pitfalls
Mistakes we see across UK indie businesses, in order of frequency.
- QR too small. Reduced to fit a busy layout. Customer phones struggle to focus; engagement drops. Code should be at least 4×4cm at till distance.
- Glossy finish in poorly-lit corner. Glare defeats the scan. Matt laminate everywhere except brightly-lit windows.
- Poster behind the counter. Customer can’t reach it comfortably. Should be in front of, or beside, the customer.
- No call-to-action text. Just a QR code with the Pointify logo. Means nothing. Always tell customers what scanning will give them.
- Multiple competing QRs. Customers see five QRs (Pointify, menu, NHS, Wi-Fi, Google review) and scan none. If you have multiple, the loyalty QR is the largest and most prominent.
- Forgetting to test. After printing, scan the poster with three different phones (iPhone, Android, an older device). Make sure it actually works.
Accessibility
UK GDPR isn’t the only legal framework that touches loyalty design. The Equality Act 2010 means “reasonable adjustments” for disabled customers apply to your loyalty programme too. Practical implications:
- High contrast. Black-on-white QR codes are easier for low-vision customers to find and scan than coloured-on-coloured.
- Alt text on web QR codes. If you print a digital version of the QR for your website, include a sensible image alt attribute describing what the code does.
- Alternative sign-up. Some customers won’t scan. A staff member should be able to sign them up manually using the merchant app, entering their email on their behalf.
- Plain language. Avoid jargon. “Loyalty rewards programme” is clearer than “reward redemption ecosystem”.
Sustainability and dispense plastic
Most UK indie businesses are increasingly conscious about disposable plastic. A laminated poster lasts 2–3 years and replaces a paper stamp card per customer per cycle. From an environmental perspective, the digital programme generally reduces print waste once the migration is complete.
If you want to take this further: print the till poster on recycled card stock, use water-based laminate (some print shops offer this), and remove paper stamp card stock from your reorder list when migration completes. Detailed migration plan: migrating from paper stamp cards to digital loyalty.
UK print suppliers and rough costs
For most UK indie businesses, you don’t need a national printer. Local options:
- High-street print shop: A4 poster with matt laminate, £3–8. Same-day turnaround in most cities.
- Online (e.g. instantprint, Solopress, Printed.com): A4 posters from ~£6 plus delivery. Bulk discounts at 5+ posters.
- Your existing menu printer: if you already print menus locally, ask them to add a loyalty poster to the same order. Often free if they like you.
Replacement cadence: once a year minimum (laminate yellows, edges fray), or whenever you change reward structure.
Conclusion
QR code design isn’t glamorous, but it’s where most UK loyalty programmes silently underperform. Put the poster at the till, A4, matt laminate, with three lines of plain copy and a 4cm+ code. Test the scan under your actual lighting. Brief your staff. That’s 80% of the work for 80% of the conversion.
Pointify offers the first month free with no contract — useful for testing exactly the poster placement and copy that work in your shop. UK landing page or get in touch. Related: launch a UK loyalty programme in seven days, digital vs paper stamp cards, best loyalty app for UK cafés.