# Charli-Jo Tyrer Canonical page: https://charli-jo.com/ I help organisations create digital services that everyone can use: directly, with assistive technology, or by sending an agent. ## What I do Most accessibility work starts with a finished website and looks for faults. I start earlier, with what people come to an organisation to achieve and what it can actually do for them. From there I model the service, build it with coding agents, and test each journey from start to finish, with screen readers and with agents, until people can complete it and can prove that they did. I have worked in computing and assistive technology for about forty years. I trained as a systems analyst in SSADM and Jackson Structured Programming, spent around thirty years in the charity sector, including at RNIB, and ran my own business training blind people to use technology. I am blind, and I test with a screen reader because that is how I use the web. ## Three pieces of work My practice rests on a principle, a method and a standard. Each can be adopted on its own. ### The principle: Universal Digital Involvement A service should be designed from the outset to be open to all people, and to the agents they authorise to act for them. Nobody is an exception requiring special accommodation, whether they arrive by screen, screen reader, voice, braille or agent. Involvement is not something we do for people who might otherwise be left out. It is a property of a well-designed service, and everyone is in it. [Read the Universal Digital Involvement proposal](/principle/) ### The method: Agent-First Accessible Service Design The method revives systems analysis for the age of agents. It looks at an organisation from the outside, separates what a service does from how it was built, models it around human intentions, and then builds and tests it. At its centre is the Completion Chain, six links that every journey must hold: Intention, Understanding, Authorisation, Action, Evidence, Correction [Read about Agent-First Accessible Service Design](/method/) ### The standard: Zero Information Casualty Zero Information Casualty (ZIC) is a web design specification. It makes sure that whatever a site publishes reaches every reader, whether a person, assistive technology or an agent a person sent, without meaning being lost on the way. It asks four questions: can they read it, is the person's reader allowed in, did it actually arrive, and did it survive being read? [Read about the Zero Information Casualty standard](/standard/) ## How we could work together Start with one journey. I look at your public website and services from the outside, with no logins, source code or hosting details needed, and reconstruct what your service actually does. Then I propose how one important journey could work for everyone, build a working prototype, and test it. If it is useful, we go further. If it is not, you have lost very little. - Outside-in service review - A working prototype of one service journey - Agent-first rebuilds of websites and services - Zero Information Casualty audits - Talks and training on agents and accessibility ## Get in touch Email me at .