In this episode of Diesel Stories, Peter interviews Phil and Mary from Fullbay Payments about credit card fraud prevention for diesel repair shops. The discussion covers the growing prevalence of chargebacks, particularly friendly fraud where legitimate cardholders dispute transactions they actually authorized. The experts reveal that 30% of shop owners have experienced fraud, with 20-25% facing chargebacks in the past year, though Full Bay sees only 0.25% of transactions result in chargebacks and wins 60% of disputes. Key prevention strategies include using card authorization forms with ID verification, implementing proper cancellation policies, training employees on fraud recognition, and choosing processors that provide fraud detection tools. The conversation emphasizes that while fraud exists across all payment methods, proper documentation and policies can significantly reduce losses. Real-world examples illustrate how shops can protect themselves through thorough verification processes, especially for high-value transactions and card-not-present situations. (Summary written with the aid of AI)