Confirming the patient’s identity is one of the most important elements in medicines administration, with research showing that medication errors are one of the most common sources of harm caused to patients. This article discusses the implementation of a barcode medicines administration system using two change management models. A complex project such as the implementation of barcode medicines administration technology, requires staff engagement at all levels. The adoption rates of the new workflow patterns in this project showed the benefits of using various change management models during different phases of a project. The project also demonstrated how nurse leaders must use a range of resources to effectively implement a new project.