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10 Dec 15
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It is particularly important in the mobile context to help the user create a mental image of the site.
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Mobile device input is often difficult when compared with use of a desktop device equipped with a keyboard.
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Because of the limitations of screen and input, forms are hard to fill in.
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Mobile users typically have different interests to users of fixed or desktop devices. They are likely to have more immediate and goal-directed intentions than desktop Web users.
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An example of such a goal-directed application might be the user requiring specific information about schedules for a journey they are currently undertaking.
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In discussing the limitations of mobile devices for delivery of Web content it is easy to lose sight of the fact that they are extremely popular and very common
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location awareness
one-handed operation
always on
universal alerting device
In addition to these factors, the advantages of mobile devices will increasingly include:
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Moreover, with mobile devices appearing in all shapes and forms, and with a growing variety of features like location technology, cameras, voice recognition, touch screens etc, the Web can reach a much wider audience, and at all times in all situations.
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It has the opportunity to reach into places where wires cannot go, to places previously unthinkable (e.g. providing medical info to mountain rescue scenes) and to accompany everyone as easily as they carry the time on their wristwatches.
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The widely varying characteristics of mobile devices can make it difficult for a Web site to provide an acceptable user experience across a significant range of devices. For example different devices support different markup features and different screen sizes may demand different sized images. Consequently, it is very common when delivering content to mobile devices to vary the details of the markup, format of images, image sizes, color depths and so on to suit the characteristics of the device in question. The process of altering content to enhance the user experience on particular devices is referred to as Content Adaptation.
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the Default Delivery Context
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It is stressed that many devices exceed the capabilities defined by the DDC. Content providers are encouraged not to diminish the user experience on those devices by developing only to the DDC specification, and are encouraged to adapt their content, where appropriate, to exploit the capabilities of the actual device.
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The Default Delivery Context is defined as follows:
- Usable Screen Width
120 pixels, minimum.
- Markup Language Support
XHTML Basic 1.1 [XHTML-Basic] delivered with content type
application/xhtml+xml.- Character Encoding
UTF-8 [UTF-8].
- Image Format Support
JPEG.
GIF 89a.
- Maximum Total Page Weight
20 kilobytes.
- Colors
256 Colors, minimum.
- Style Sheet Support
CSS Level 1 [CSS]. In addition, CSS Level 2 [CSS2]
@mediarule together with thehandheldandallmedia types (see CSS 2 Media Types).- HTTP
- Script
No support for client side scripting.
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By deficient we mean non-support of mandatory features of a relevant standard or recommendation and other bugs or errors in implementation.
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5.2 Navigation and Links
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Design the service so that frequently accessed information is easily reached with a minimum number of page retrievals.
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A guideline is that users become frustrated if it takes more than four retrievals to reach their objective
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Many mobile devices lack a pointing device and server-side image maps cannot be used on such devices.
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5.3 Page Layout and Content
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Users in a mobile context are often looking for specific pieces of information, rather than browsing
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The general prescription to use clear language is of particular importance for mobile delivery, where brevity and directness are generally more desirable than a discursive style.
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there should be a minimum amount of clutter preceding this - including navigation, decorative images, advertising and other material that is not central to the user's experience of the page.
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5.4 Page Definition
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Design pages so that they are useful when rendered as text-only.
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09 Dec 13
keaton dodsonThis document specifies Best Practices for delivering Web content to mobile devices. The principal objective is to improve the user experience of the Web when accessed from such devices.
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Mercedes KamijoBest Practices for delivering Web content to mobile devices
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04 Jul 12
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Manuel GertrudixThis document specifies Best Practices for delivering Web content to mobile devices. The principal objective is to improve the user experience of the Web when accessed from such devices.
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20 Jun 12
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