Guide
Loyalty card design that people actually keep
A wallet card is looked at for two seconds, at arm's length, in a queue, often in bad light. That constraint should decide every design choice you make, and it rules out most of what looks good on a laptop.
· 6 min read
The two-second test
Hold your card design at arm's length and look at it for two seconds. Can you tell how many stamps you have and how many remain? That is the entire job. Customers do not study a loyalty card; they glance at it while deciding whether to bother. If the answer is not instant, no amount of brand consistency will save it.
Contrast is not a style choice
Brand palettes are chosen for signage and packaging, where they sit on white paper in good light. On a phone, a mid-grey stamp on a slightly different mid-grey background disappears. The measurable version of this is contrast ratio, and anything below about 4.5 to 1 for the important elements is a card people cannot read. Where your brand colour fails that test, the card should bend, not the customer's eyesight.
Stamp count changes the design
A ten-stamp card laid out in a single row on a phone-width strip gives circles about 25 points across — legible in a mockup and useless in a queue. The same ten as two rows of five are more than twice the size. If you want a longer card, twenty stamps, accept that it will be three rows of small marks and consider whether a shorter card with a smaller reward would serve you better.
Photography behind the stamps
A photo of your counter or your beans makes a card look like yours rather than like software. It also makes stamps harder to read, which is why any photo needs dimming behind the marks — how much depends on the picture, since a bright shot behind white stamps needs far more knocking back than a dark one. Landscape crops work; portrait photos of people rarely survive being cut to a wide strip.
What to leave off
Your address, your opening hours, your website and your social handles all belong on the back of the pass, not the front. Every element competing with the stamps makes the card slower to read. The front should carry your name, your mark, and the count. That is a complete design.
Questions
- Should the card match my brand exactly?
- Close enough to be recognisably yours, but legibility wins where they conflict. A card in your exact brand grey that nobody can read is worse for your brand than one a shade darker that works.
- What stamp icon should I use?
- Something that reads as a silhouette at a very small size. A cup, a slice, a scissors — simple shapes survive. Detailed illustrations turn to mush at 25 points across.
- Can I change the design later?
- Yes, and existing cards pick up the new look — an Apple pass refreshes and a Google card mirrors what is on the server. You do not need to reissue anything or ask customers to re-add.
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