Design a cashless candy dispensing machine.

Focus on the user experience and the technical components of the cashless candy dispensing machine. Start by outlining the user journey, from selecting a candy to completing the payment process. Consider the payment methods you will support (e.g., mobile wallets, contactless cards) and how the machine will securely process these transactions. Discuss the hardware requirements, such as sensors for detecting candy selection and a mechanism for dispensing the candy. Finally, think about how to handle inventory management and maintenance, ensuring that the machine remains stocked and functional over time.