Skip to main content
Numeric vs alphanumeric voucher formats and when each is used.
The Bleepay system supports two voucher modes to balance compatibility with existing terminals and scalability in digital environments.

​
Numeric mode

  • Format: Short sequence of digits (e.g. 6 digits).
  • Use case: Compatible with legacy POS devices and keypads that accept only numeric input (e.g. ISO/IEC 7812-1, ANSI X4.13).
  • Examples: Countertop payment terminals, integrated POS, kiosks, ATMs, older keypad-based merchant terminals.
  • Transmission: User can read the code aloud or enter it manually; works in low-tech retail environments.

​
Alphanumeric mode

  • Format: Short sequence of letters and digits (e.g. 6 alphanumeric characters).
  • Use case: Modern interfaces that support full keyboard or alphanumeric entry.
  • Benefits: Larger space of unique codes in parallel → better scalability and lower code-collision risk.
  • Examples: Touchscreen POS, smart POS, merchant web/mobile dashboards, self-checkout kiosks with software keypads.

​
Mode selection

Mode can be chosen dynamically based on:
  • Terminal capabilities
  • Merchant configuration
  • User or context preference
When the payee uses a numeric-only terminal, the payer’s wallet can generate a numeric voucher. When the interface supports alphanumeric input, the wallet can generate an alphanumeric voucher for higher throughput and security. Supporting both keeps interoperability with legacy hardware while allowing high-volume operation in modern setups.

​
Next steps