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Blindness is more feared by the public than any other ailment. Nowadays Smartphones has become one of the basic amenities of Humans. Though the various touch interactions has become latest, affordable, sophisticated but easier, it became impossible for the visually impaired. As they need physical interaction with the device.
Touch screens are often used as a common interface element of mobile devices such as Tablet PCs, PDAs, and smartphones. Touch screen interfaces offer users several advantages over interfaces with physical buttons. One advantage is flexibility of presentation and control. A touch screen device can display different interfaces on the same surface, such as a scrollable list, a QWERTY keyboard, or a telephone keypad.
Unfortunately, touch screens can present significant accessibility barriers to blind users. Most touch screens provide no audio or tactile feedback, making it difficult or impossible to locate items on the screen. Because of these difficulties, blind users may need to be shown the locations of on-screen objects by a sighted person, may need to use an alternative accessible interface (if available), or may be completely unable to use a device. Although some assistive technologies can improve touch screen accessibility, these typically require additional hardware buttons or provide only limited use of the touch screen. Thus, most current touch screen interfaces remain inaccessible to blind users.
In response to these limitations, we developed Android Eye, a set of accessible multi-touch interaction techniques for touch screen interfaces. Android Eye provides a completely non-visual interface that repurposes a touch screen as a “talking” touch-sensitive surface. Android Eye provides three modes of accessibility and three basic gesture interactions:
• One-finger single tap to voice feedback the item
• One-finger Double tap to execute the item
• Two-finger tap to browse the lists
We have also provided the Button mode for easy controlling of phone calls, which is activated by default in the device:
• Automatic Caller Name and Number feedback on an Incoming call
• Power button single press to silent the incoming call
• Volume Button Up key single press to attend the incoming call
• Volume Button Down Key single press to reject the incoming call
• Power Button single press to hang the call
In addition to this, Optional External device accessibility support also provided. External Keyboards (Normal or Braille), Joysticks, Mouse, etc., can be connected to the device through the Micro USB port with the help of a USB to Micro – USB converter.
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