This paper reports on the evaluation of a digitallyaugmented exhibition on the history of modern media and our experiences with the methodic approach employed. As a central element of this exhibition visitors can buy a smartcard that enables them to store collected or selfcreated data in a ‘digital backpack’, which can be accessed via internet as a personalized souvenir. We have evaluated the exhibition, visitors’ perceptions and usage of the card using a multi-method strategy complementing quantitative data-analysis with qualitative, ethnographic methods. This paper focuses on visitors’ use and the perceived utility of the smartcard, and our experiences with using automatically generated data from interaction logfiles for analyzing visitor behavior, and with the multi-method strategy. Author Keywords Museums, guide systems, evaluation, smartcard, visitors. ACM Classification Keywords H5.m. Information interfaces and presentation (e.g., HCI): Miscellaneous.