Accessibility indicates the degree (ease or barrier) of access and usability of ICT systems, service offers, applications and information via ICT (information and communication technology). Barriers to accessibility refer to technical, audio, visual, semantic and language barriers, lack of skills, exclusion of certain constituencies, etc. The overall aim is to minimise these barriers and to support the ease of use in order to avoid exclusion of individuals or even larger groups. When designing accessible systems, specific groups with functional impairments shall be asked to test and assess accessibility.

Literature

• Karl, Guido: Barrier-free accessibility: Not only talking people can be helped. In: Zechner, Achim (Ed.): Handbook for E-government: Strategies, solutions, efficiency and impact. Munich : Fraunhofer IRB Verlag, 2007, S. 399-404