Perceivability
Through the principle of perceivability, we aim to ensure that functions and information are presented in a way that they can actually be noticed by every user. A key concept for us is the so-called dual-channel principle. This means we make information perceivable through two different sensory channels.
Simply put, we ensure that:
- all information that can be seen can also be heard,
- all information that can be heard can also be seen,
- we do not rely on color alone to convey information, to account for color blindness,
- and, where possible, we also support/represent information through touch.
In practice, we implement this in the following ways:
- we provide all images and graphics with alternative text,
- we allow time settings in time-based media to be adjustable,
- we make text sizes adjustable,
- we ensure sufficient contrast between foreground and background, or distinguish foreground and background sounds,
- or we offer videos with subtitles.
Operability
To ensure users can interact with our IT solutions, we make sure they are also operable for people with disabilities.
For us, this includes, among other things:
- ensuring keyboard operability, especially important for people with motor impairments or blindness,
- providing sufficient time limits for interaction steps for all users,
- avoiding flashing or blinking to prevent seizures in people with epilepsy,
- supporting orientation with clear link texts and various navigation options,
- offering alternatives for pointer gestures or complex gestures.
Understandability
We do not underestimate the principle of understandability even outside the context of IT accessibility. We ensure that content is readable and understandable for the widest possible audience—even when read aloud. Therefore, we use clear and simple language and, where necessary, provide explanations for technical terms, unusual expressions, or abbreviations so that even non-experts, people with a different native language, or people with cognitive impairments can understand the content. For us, the principle of understandability also includes a predictable user interface with consistent layout and navigation, as well as support for avoiding input errors.