Universal Design is a no-brainer. If you click on some of the links provided below, you'll see why. On the left, you'll find a video covering the principles of universal design, as well as an academic center that has done a great deal of research on the topic. On the right, you'll find a case study from BMW.
There are a number of academic and not-for-profit centers that are working on designing age-friendly products, services and workplaces, including but not limited to the Center for Universal Design at North Carolina State University, the Stanford Center on Longevity at Stanford University and the MIT AgeLab at the Massachusetts Institute of Technology. Click on the logos on the right side of this page to learn about these hubs of age-friendly innovation.