Evaluation of accessibility testing methods. which methods uncover what type of problems?

We examined fourteen accessibility evaluation methods and put them into four categories based on the knowledge and resources required to perform them. We also classified the methods based on whether they evaluated technical or usable accessibility. Then, we selected four of these methods from different categories to evaluate accessibility of an e-ID solution. We looked for confusing and critical issues. Each method found unique issues and overlapping issues, but no single method found more than half of the issues. This information should help inform future accessibility evaluations of other solutions and can aid other teams in selecting methods based on their specific goals and resources.