Table 1 Guidelines for accessibility and usability solutions for applications used by the elderly

Sight

High text-background contrast

Large screens

No flashing images or text

High screen resolution

Avoid the use of quick screens

Clear, simple screens

Minimum font size of 10-12pt

Audio instructions rather than visual instructions

Easy-to-read font

Hearing

Written content as an alternative to audio content

Possibility of changing frequency and tone

Possibility of changing the volume

Mobility

Separation between selectable objects

Possibility of using different I/O peripherals

Use of touch screen

Moving objects should not be used as cascading drop-down menus

Cognitive

Show context information for guidance

Limit functionality

Facilitate the use of forms

Design should be error-free

Use short texts and images

Tactile interface

Assistant to provide guidance

Use of demos and trial runs

Use only one font face on the screen

Limit the amount of information displayed

Use clear, imperative instructions

Show short, clear error message

Encourage work and achievements

Use of audio encouragement

Clear, imperative instructions

Highlight selections