This study aims to longitudinally evaluate the usage and long-term benefits of the CE-marked device, Heylo™, a digital leakage notification system for people with intestinal stomas. The system, which includes a smartphone application, an adhesive sensor layer, and a Bluetooth transmitter, notifies users of changes in their baseplate status, potentially reducing stoma effluent leakage and improving quality of life. The physical Heylo™ device, is part of the Coloplast Charter telehealth service.