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Useability Principles (Accessibility (Text colour contrast (Having the…
Useability Principles
Accessibility
Text colour contrast
Having the text a colour that does not get overcome by the background colour is important for someones ability to actually read the text. For example, black text on a dark blue background is not a good idea since you won't clearly be able to read the text.
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Accessible multimedia
This refers to how media should be accessible by all people, including those that are deaf. This means you can either have the video or audio subtitled, have another link to the subtitle version, or you could transcribe the words from the media, which many free services offer.
Safety
Consent Prompts
The program should ask for the user's consent to access data that can be seen as sensitive, for example location, phone number, contacts, camera and photos.
Hiding data
The main example of this is that when a user enters a password, the letters aren't shown on the screen so no one who is around the person can see their password and potentially access that account without consent.
Data loss
If the user wants to delete something, for example a note page or something, a warning should pop up that asks if they are sure. This is to prevent accidental deletion of files. There could also be an undo feature or a recycle bin-type thing that would solve this problem.
Utility
Portability
A program is generally considered portable if it does not rely on any specific hardware or operating system to work, for example something that is cloud based will most likely be portable because you can access it anywhere you have internet.
Responsiveness
The responsiveness of a design refers to how it responds to changes in screen sizes and other capbilities on different devices, for example it will have to shift its design for a screen that is much smaller than a computer screen.
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