: These sequences are used to set product prices, monitor sales, or test dispensing mechanisms.
: Businesses or event organizers distribute codes (physical or digital) that act as vouchers, allowing users to bypass standard payment. Vending Machine Codes Food.
: Machines often feature QR codes that customers can scan to provide feedback, report issues, or receive promotional rewards. : These sequences are used to set product
True secret codes exist but are designed for , not customers. Vending Machine Codes Food.