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Unit-4 Web Applications and Security






                                  WEB APPLICATION                                                      6










                   By God’s grace, human beings are blessed with the best form of life among all living beings.
                   Though some of them are not so fortunate and lack the basic human characteristics like a few
                   are challenged by ears, few by eyes, some by limbs, etc. But innovative exploration of ideas from
                   human brain has triggered technology in a way that has empowered us and has paved a way to
                   overcome many such disabilities.

                   In simple words, we can say that technology plays a major role in overcoming the challenges faced
                   by physically challenged people. Similarly, the resources of web applications, which have evolved
                   out of information technology, have revolutionised humans to a great extent.
                       VARIOUS TYPES OF IMPAIRMENT

                   Impairment refers to non-cognizance  or non-matching between  a normal standard  of some
                   functionality and an abnormal standard. In medical terms, it is an abnormality in behaviour of any
                   part or organ of a body.

                    here are different types of impairment like:
                      ognitive impairments and learning disabilities  such as  yslexia   ttention  eficit- yperactivity
                      isorder        or  utism.
                     Visual impairment such as low vision, complete or partial blindness and colour blindness.
                      earing impairment including deafness.
                     Motor or dexterity impairment such as paralysis, cerebral palsy or carpal tunnel syndrome and
                     repetitive strain injury.

                    eople with such impairment  find it di cult in reading contents or typing anything which is
                   supposed to be a very simple task for normal individual. IT resources assist them by acting as a
                   substitute for their eyes, hands and other organs.
                   Computer Accessibility refers to the ease of access/user friendliness of a computer system for
                   all, regardless of the type and severity of disability or impairment. Assistive Technology is an
                   alternative method by which a system is customised to make life easier for people with disability
                   to some extent.

                   'Ease of Access Center' in Windows/Accessibility Dialog Box
                   It consists of the options of sticky keys  filter keys and toggle keys. Such keys help to avoid the
                   strain caused due to repetitive keystrokes or physical disability while trying on the keyboard.

                   It helps to locate the accessibility settings tool which makes it easier to use the computer by
                   customising the functions of keyboard, mouse, etc.


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