The phone’s wallet is the one place a card does not get lost: it is always two taps away.
Create my free cardPlenty of people join a programme and never open the link again. Not for lack of interest — they simply cannot remember where it went. An email from three weeks ago is not findable at a counter.

From their card the customer taps “add to wallet”. The pass is saved on the phone. Every stamp you add updates that pass within seconds, with nobody opening anything.
When the card fills up, the pass shows a notice on the lock screen. It is the one message you can send without asking permission to email.
The phone checks for changes on its own. The customer opens the wallet and sees the right number, even if you stamped it yesterday.
Apple Wallet on iPhone, Google Wallet on Android, same design and same rules.
Apple passes need an Apple Developer certificate in your business’s name or in ours. It is a yearly piece of paperwork, and until it is in place the card works the same in the browser.
Yes. On Android the card saves to Google Wallet and behaves the same: it updates itself and gives notice when a reward is ready.
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