Online casinos can ensure responsible gambling practices in payment processing by implementing several key measures. First, they can integrate features that allow players to set deposit limits, withdrawal limits, and time-out periods to control their gambling behavior actively. Additionally, casinos can leverage identity verification processes to ensure that users are of legal gambling age and to monitor for signs of problematic gambling patterns. Implementing real-time transaction monitoring can help identify unusual betting behaviors that may indicate a developing addiction, prompting timely interventions.