Companies faced over 2,200 lawsuits in 2019 for failing to make their digital properties accessible, so it’s no wonder firms are prioritizing accessibility. But it’s about more than legal risk — accessibility efforts have a long track record of yielding innovations that help all customers, a benefit commonly called the “curb cut effect.” To seize this opportunity, it’s crucial to include people with disabilities in your design research. To illustrate why, we interviewed 12 people with disabilities. This report lays out five best practices based on that research, with highlights from our interviews.