What are examples of barriers to accessibility?

Attitudinal: when people think and act based upon false assumptions.
Physical: when obstacles in an environment make access difficult.
Information or Communication: when people with disabilities are excluded because they use other ways to communicate.
Systemic: when an organization’s policies, practices, and procedures result in exclusion.
Technology: when technology can’t be accessed by people with disabilities.
Sensory: when sensory information such as lights, sounds, smells, etc. prevent participation in the environment.