DESIGNING FOR ULTRA-MOBILE INTERACTION, ACTA UNIVERSITATIS OULUENSIS C Tec h n i c a 3 5 5

Usability methodology has matured into a well-defined, industrially relevant field with its own\nfindings, theories, and tools, with roots in applying information technology to user interfaces\nranging from control rooms to computers, and more recently to mobile communications devices.\nThe purpose is regularly to find out the users’ goals and to test whether a design fulfils the usability\ncriteria. Properly applied, usability methods provide reliable and repeatable results, and are\nexcellent tools in fine-tuning existing solutions.\nThe challenges of usability methodologies are in finding new concepts and predicting their\ncharacteristics before testing, especially when it comes to the relatively young field of mobile user\ninterfaces. Current usability methods concentrate on utilising available user-interface\ntechnologies. They do not provide means to clearly identify, e.g., the potential of auditory or haptic\noutput, or gestural input. Consequently, these new interaction techniques are rarely used, and the\nlong-envisioned useful multimodal user interfaces are yet to appear, despite their assumed and\nexisting potential in mobile devices.\nEven the most advocated and well-known multimodal interaction concepts, such as combined\nmanual pointing and natural language processing, have not materialised in applications. An\napparent problem is the lack of a way to utilise a usage environment analysis in finding out user\nrequirements that could be met with multimodal user interfaces. To harness the full potential of\nmultimodality, tools to identify both little or unused and overloaded modalities in current usage\ncontexts are needed. Such tools would also help in putting possibly existing novel interaction\nparadigms in context and pointing out possible deficiencies in them.\nIn this thesis, a novel framework for analysing the usage environment from a user-centric\nperspective is presented. Based on the findings, a designer can decide between offering a set of\nmultiple devices utilising various user-interface modalities, or a single device that offers relevant\nmodalities, perhaps by adapting to the usage environment. Furthermore, new techniques for\ncreating mobile user interfaces utilising various modalities are proposed.\nThe framework has evolved from the experiences gathered from the designs of experimental\nand actual product-level uni- and multimodal user interface solutions for mobile devices. It has\ngenerated novel multimodal interaction and interface techniques that can be used as building\nblocks in system designs.

ISBN-10:
978-951-42-6178-7
Kieli:
eng.
Sivumäärä:
224 s.
Tekijät:
Ronkainen Sami
Tuotekoodi 013970
25,00 €