I would like to give my deepest gratitude to all of kind assistances from many people
who contribute their time and knowledge in order to help me fulfilling my thesis.
Without their supports, this thesis would not be completed.
Rikard Lindell, without his supports and supervisions, this thesis may have not been
systematically conducted. Especially, We would like to thank him for surpassing his
human computer interaction knowledge background to me.
Toni Ivergard, for the ideas initiations, though and the background knowledge in
ergonomic field.
Woottikorn Kaewchusri, for visualizing my though in to such beautiful interfaces.
Jatuphol Chawapatnakul, for strongly backing my thesis work up.
Mats Rundkvist, for warmly help with understanding the elders.
All elders who helped me evaluating my design and give me valuable comments