OpenTrain is seeking entry-level contractors to collect smartphone motion videos and inertial sensor data following standardized technical protocols to help train AI models. Candidates must be fluent in Portuguese, reside in one of 12 eligible countries, and have access to a compatible smartphone such as an iPhone 12+, Google Pixel 6+, or Samsung Galaxy S21+. The role requires 20 or more hours per week, delivering at least 10 hours of approved video footage weekly.