Access is a chain of events that begins with the decision to visit and ends with the safe return home of the visitor.

Fuente:
https://www.sensorytrust.org.uk/information/factsheets/planning-your-inclusive-communication.html

The Access Chain describes access as it is experienced from a visitor’s perspective. It prompts you to think about what information they need at each step, by whom and how it is best delivered. Ideally, improvements to each link in the chain will be made concurrently, but alternatively it can help you work out the apporpriate phasing of work. For example, there is little point in investing in pre-visit information until there is adequate information on site to support a successful visit.