From many barrier factors between the elderly users and usage of technologies, in this
section, we would like to suggest a set of software characteristics that might improve
the performance of the software when used by the elderly users. Interaction design for
elderly users is more complex than general user group since they might have physical
ability declines (cognitive, motor, eye vision etc.) and/or mental declines (selfconfident
in use of new products, anoxia etc.). Moreover, most software is made from
the younger developer. With their limited experience in age-related decline, they may
hardly understand limitation of elderly users (Keates S. L., 2000). Zajicek (2004)
argued that design guideline for older users should be carefully documented and used
by younger developers