BreezePay

BreezePay pays with a short, human-readable code instead of an account number or card. You generate a unique, time-bound seven-digit code, the customer presents it at a POS or web channel, and you fulfil it to complete the payment.

The lifecycle is small: generate, then either fulfil the code or cancel it while it is still unused. Because a code is time-bound, expiry is a normal outcome rather than an error — requery by client reference to find out what actually happened to a code you issued.