Souheil Bcheri, Erik Björk, Daniel Deibler, Göran
Hånell, Jimm Lerch, Maksym Moneta, Monika Orski,
Eva Schlehahn, Welderufael Tesfay

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This document focuses on the description and analysis of the user evaluation results from the first
and second rounds of the Söderhamn school pilot conducted within the scope of WP6 of the
ABC4Trust project. The goal of the pilot was to employ Privacy-ABC technologies into a school
interaction system that allowed pupils, school personnel and parents to interact in chat rooms and
information areas. The interactions were anonymous when they choose for it to be so, while their
personal attributes (credentials) remain verifiable throughout the process. The design,
implementation and testing of the pilot system was based on the use cases, pilot requirements and
pilot system architecture documented in deliverables [D51], [D61], and [D62] respectively while
the technical aspects of the deployment are elaborated in [D53].
This document begins with a brief examination of the timeline and content of the two rounds of
the school pilot as well a review of the relevant legal and survey-related documentation. The pilot
scenarios are subsequently presented in more detail in order to demonstrate their connection with
the evaluation process. Success criteria of the pilot is appraised in context with the degree to
which the realization of the two rounds met these criteria. Next, the findings of the evaluation of
the pilot are described. User reactions and intersection with the pilot system are shared and an
evaluation of the pilot’s components is consequently made, centered on the impact on user
experience. An evaluation of the legal aspects and impact of using Privacy-ABC follows. Finally,
this report provides a comprehensive list of recommendations for further development in using
To sum up, the two rounds of the school pilot were successful. The goal, which was to deploy the
new cryptographic architecture to showcase the Privacy-ABCs technology features, as well as the
Restricted Areas application, was achieved.

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