Arcade operators face significant revenue losses due to credit fraud, making prevention methods crucial for business sustainability. The most common techniques involve both physical and digital security measures. Traditional coin mechanisms are being replaced or supplemented with electronic payment systems that use encrypted transactions, making it harder to manipulate credits. Many modern arcades employ RFID cards or mobile payment options that create digital audit trails.

Physical security enhancements include using anti-fraud tokens specifically designed for arcade machines instead of generic coins. Regular maintenance and inspection of coin slots and mechanisms prevent tampering and identify potential vulnerabilities. Surveillance cameras positioned near high-value machines deter would-be fraudsters and provide evidence when incidents occur.

Advanced arcades implement credit monitoring software that tracks unusual patterns, such as rapid credit accumulation or inconsistent play patterns, automatically flagging suspicious activity for staff review. Some systems incorporate biometric verification for high-stakes tournaments or premium machines. Employee training remains critical - staff should recognize common fraud techniques like string pulling, coin on a string, or mechanical manipulation.

Establishing clear visible security measures acts as both prevention and deterrent, ensuring honest players can enjoy games while protecting the operator's investment and revenue stream.