Perceivability

With the principle of perceivability, we want to ensure that functions and information are presented in such a way that every user can actually notice them. An important aspect for us is the so-called two-channel principle. This means that we make information perceivable via two different sensory channels.

Put simply, we ensure that:

• all information that can be perceived visually is also available in an audible form,
• all information that can be perceived audibly is also available in a visual form,
• we do not convey information by colour alone, in order to compensate for colour blindness,
• where possible, we also support/represent information in a tactile way.

In practice, we implement this, among other things, by:

• providing alternative text for all images and graphics,
• allowing the duration of time-based media to be adjusted,
• making text sizes adjustable,
• ensuring sufficient contrast between foreground and background or making foreground and background sounds distinguishable,
• offering videos with subtitles.

Operability

So that users can interact with our IT solutions, we ensure that they are operable for people with disabilities as well.

For us, this includes in particular:

• keyboard operability, which is especially important for people with motor impairments or blindness and which we ensure,
• time limits for individual interaction steps that we design to be sufficient for all users,
• refraining from flashing and blinking effects in order to avoid triggering seizures in people with epilepsy,
• supporting orientation through clear and unambiguous link texts and through multiple navigation paths,
• providing 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 easy to read and understand for the widest possible audience, including when it is read aloud. Therefore, we use language that is as clear and simple as possible and, where necessary, provide explanations of technical terms, unusual expressions or abbreviations so that non-experts, people with a different native language or people with cognitive impairments can understand the content well. For us, the principle of understandability also includes the predictability of the user interface through consistent layout and navigation, as well as support in helping users avoid input errors.