In this study, 114 patients participating in community based outpatient treatment programs for alcohol use disorders will wear SCRAMx for a 12-week period. They will be randomized to standard care or standard care plus CM, with reinforcement contingent upon attendance at treatment. The investigators will assess treatment attendance and alcohol use via SCRAMx and self reports. The investigators expect that patients randomized to the CM intervention will remain in treatment longer and show reductions in both SCRAMx assessed and self reported drinking days relative to those randomized to standard care.