The algorithm uses the below formula to generate barcodes that are printed on receipts:
- Punchh key + a parity bit
Punchh key is unique for each receipt and is never sequential, and is generated with a myriad of logic and combinations that are impossible to decrypt without the decrypting algorithm.
Example: ('374951002060'+ '0-9')
If further assistance is required, submit a ticket to Punchh Support. (For help submitting a ticket, click here)