Arcade machines rely on sophisticated coin and bill validator systems to ensure smooth and accurate payment processing. The coin validator typically consists of a mechanical or optical sensor that detects the size, weight, and metal composition of inserted coins. Valid coins trigger a credit signal, while counterfeit or foreign objects are rejected.

Bill validators use advanced scanning technology to authenticate paper currency. They examine security features like watermarks, magnetic ink, and UV patterns. Once validated, the machine converts the bill into corresponding game credits. Modern systems may also support digital payments via QR codes or NFC.

These systems are designed for durability, handling thousands of transactions while resisting tampering. Regular maintenance ensures optimal performance, keeping arcade operators and players satisfied with reliable payment processing.