Contingency management (CM) is highly efficacious for reducing substance use, and recent data suggest that reinforcing attendance at treatment can significantly improve treatment outcomes. Importantly, CM interventions that reinforce attendance are more likely to be adopted clinically than those that reinforce abstinence. Having objective indicators of drinking outcomes, nevertheless, is critical for quantifying the benefits of attendance-based CM treatment in alcohol abusing populations. New technology is now available to gauge alcohol use in patients' natural environments. The Secure Continuous Remote Alcohol Monitor (SCRAMx®) continuously monitors alcohol consumption 24 hours a day. As such, it may be ideal for objective evaluation of alcohol consumption during treatment intervention studies, including those that involve CM.