Usability is an important factor influencing the acceptance of technology-related products and subsequently the decision process to use or buy them. For this reason usability has been of interest in market research for many years. However, in the context of user-controlled Identity Management Systems (IMS) hardly any comparative usability studies have been published. This document gives an overview of established evaluation methods and criteria for usability and analyses which methods and criteria are suited for user controlled IMS. The selected methods and criteria are applied to twelve IMS in six functional classes. These classes include user controlled identifier management, policy management, form filling, context monitoring and history management. Nine of these IMS are further analysed in depth and the results of the tests are published in this report.