Patients are more likely to adhere to their treatment plans when drug-delivery devices are user-friendly. So, what can device developers do to ensure safety but also provide a positive user experience? Using human factors engineering, developers can design features to prevent errors and contribute to the successful use of the device. On this episode of Here's an Idea™, talking Jeff Morang, Director of Human Factors Engineering at BlackHägen Design, explains what designers need to know about human factors for combination devices.