The elderly population is growing and disabilities tend to increase with age. Professionals in the field of human-computer interaction (HCI) are becoming increasingly aware of the needs of the elderly and people with disabilities. They also need to ensure that systems are designed for all, with specific consideration of these groups, not only computing systems but also other assistive and adaptive technologies such as information services and the use of smart cards, assistive robotics, systems for travellers, and home and environmental control systems. Designers need to monitor the latest developments in the design of HCI and to appreciate their impact on accessibility and usability.