A loyalty card that lives in their phone

Paper loyalty cards die in the wash. The ones that survive live in a kitchen drawer, remembered the day after the visit. Every loyalty scheme lives or dies on the same thing — whether the card is there at the moment it's needed — and the phone always is. A loyalty card in Apple or Google Wallet can't be lost, can't be left at home, and sits in the same pocket as the way they pay.

Run it as stamps — six stamps and the seventh coffee is on the house — or as points against rewards you name yourself. The rules are yours: what earns a stamp, what the points add up to, what the reward is at the end. There's nothing for anyone to download and no app to install. The card drops into the wallet their phone already has, and the phone tells them when it's full. You never have to remind anyone they're one visit from a free coffee; their pocket does it.

Joining and stamping

People join by scanning the A4 poster we print for your counter. That's the entire sign-up: scan, and the card lands in their wallet. No app to hunt for, no account to create, no form longer than the queue they're standing in.

Stamping is kept just as plain. There's a PIN-protected counter link — open it on the till, a tablet or your own phone, and stamp the visit there. The PIN means only your staff can hand out stamps, so nobody is quietly topping up their own card while they wait for their order.

Quiet weeks

This is where the wallet card earns its keep. On a slow week, message the customers who are a stamp away — 'one more visit and the next one's on us' does more good than a discount shouted at strangers. You write it, and it goes only to people genuinely close to their reward, so it reads as a nudge rather than a broadcast.

Two rules, and they're firm ones. Only the people who ticked the box when they joined can be messaged at all. And nobody hears from you more than once every three days, however quiet the week. A card that pesters gets deleted, and a deleted card is worse than a paper one.

The honest edges

• It lives in a smartphone wallet, so it needs a smartphone. A customer without one can't carry it, and there's no shame in keeping a few paper cards behind the counter for them.
• The card doesn't pour the coffee. The reward is yours to honour, and the scheme only works if stamping becomes as routine at your counter as taking payment.
• The message limit isn't a dial you can turn up. Once every three days at most, box-tickers only. We'd rather your card stayed welcome in their wallet than earn you one loud week.
• It's built for the customers you already have. Bringing the same faces back is the whole job here; getting found by new ones is a different page of ours.

The idea is as old as the corner shop: reward the people who keep coming back, and they keep coming back. The only new part is that the card now lives where it can't be lost, counts itself, and tells its owner the moment the reward is ready.