Colorectal cancer is the fourth leading cause of cancer-related mortality in the world. During patient screenings for populations at risk, polyp detection rates depend on the endoscopist's ability to identify the lesions, which takes years of practice and training. Endoscopic training can be challenging for the trainee and preceptor. Frustration can result from ineffective communication regarding areas of interest. Our team developed a novel tablet application for real-time mirroring of the colonoscopy examination that allows preceptors to make annotations directly on the viewing monitor that facilitates medical training and enables collaboration among several endoscopists during a procedure.